Ο πεζόδρομος είναι δημόσιος χώρος και είναι πιο ασφαλής για τα παιδιά.

In Greek, when you talk about a thing in general, you very often use the definite article (Ο, Η, ΤΟ), not the indefinite one (Ένας, Μία, Ένα).

• Ο πεζόδρομος είναι δημόσιος χώρος...
  • Means: “The pedestrian street (as a type / in general) is a public space…”
  • This is like saying in English: “A pedestrian street is a public space…” (generic statement).

If you said:

• Ένας πεζόδρομος είναι δημόσιος χώρος...

this would sound more like “A (certain, some) pedestrian street is a public space…”, less like a general rule and more like “there exists at least one such street”.

So:

• Greek often uses the definite article where English uses a/an for general truths or definitions.
• That’s why Ο πεζόδρομος is natural here.

Πεζόδρομος is a compound word:

• πεζός = pedestrian, on foot
• δρόμος = road, street

So πεζό + δρόμος → πεζόδρομος = pedestrian street, i.e. a street reserved for people walking, not for cars.

Some details:

• Gender: masculine
• Article: ο πεζόδρομος
• Plural: οι πεζόδρομοι
• Stress: πεζΟ-δρο-μος (stress on the -ζό- syllable)

Don’t confuse it with:

• πεζοδρόμιο = sidewalk / pavement, the part at the side of a road where people walk.

So:

• πεζόδρομος = a whole street with no cars (usually)
• πεζοδρόμιο = the raised walking area next to a normal road

The normal, neutral word order in Greek is:

• adjective + noun
  → δημόσιος χώρος (public space)

You can say χώρος δημόσιος, but:

• That sounds marked or emphatic, a bit like “a space that is public” – it gives special emphasis to the adjective, often as new or contrastive information.

In this sentence we just have a straightforward description, so the standard order δημόσιος χώρος is used.

So:

• δημόσιος χώρος = normal, neutral way to say public space
• χώρος δημόσιος = more emphatic or stylistic, not the default

Δημόσιος is an adjective and it must agree with the noun χώρος in:

• Gender: masculine
• Number: singular
• Case: nominative (it’s part of the subject complement after είναι)

Χώρος is:

• masculine
• singular
• nominative

So the adjective must also be:

• δημόσιος (masc. nom. sg.)

Other forms of the adjective would be:

• δημόσια (feminine)
• δημόσιο (neuter)

Examples:

• δημόσιος χώρος (masc.) – public space
• δημόσια πλατεία (fem.) – public square
• δημόσιο κτίριο (neut.) – public building

In this sentence, because the noun is ο χώρος, we must use δημόσιος.

Both exist in Greek, but they’re used differently:

• δημόσιος

  • Means public in the sense of belonging to the state / open to the public.
  • δημόσιος χώρος = public space
  • δημόσια υπηρεσία = public service

• δημοτικός

  • Means municipal, of the municipality / city council.
  • δημοτικός κήπος = municipal garden
  • δημοτικό σχολείο = primary school (literally “municipal school”, though today it’s a standard term)

In δημόσιος χώρος, we mean space that is generally public, not specifically municipal, so δημόσιος is correct.

Yes. Πιο ασφαλής is a periphrastic comparative (using πιο + adjective), which is the most common way in modern Greek to form comparatives.

• ασφαλής = safe
• πιο ασφαλής = safer
• ο πιο ασφαλής = the safest

So in the sentence:

• είναι πιο ασφαλής για τα παιδιά = it is safer for children

There is also an older/synthetic comparative:

• ασφαλέστερος = safer
• ο ασφαλέστερος = the safest

This is grammatical, but in everyday modern speech πιο ασφαλής is more common and sounds more natural in most contexts.

Ασφαλής is a two-ending adjective (like ευγενής, σταθερής, etc.). Its forms are:

• Masculine/Feminine nominative singular: ασφαλής
• Neuter nominative/accusative singular: ασφαλές

In the sentence:

• Subject: ο πεζόδρομος (masc., nom., sg.)
• Predicate adjective describing the subject: πιο ασφαλής (must agree in masc., nom., sg.)

So:

• Ο πεζόδρομος είναι πιο ασφαλής. = The pedestrian street is safer.

Πιο ασφαλή would be:

• masculine/feminine plural accusative, or
• neuter plural nominative/accusative,

which does not match ο πεζόδρομος (singular).

You would use πιο ασφαλή with a plural subject, e.g.:

• Οι δρόμοι αυτοί είναι πιο ασφαλείς. (more archaic/planned style)
• More naturally: Οι δρόμοι αυτοί είναι πιο ασφαλείς (still masc. nom. pl.)
  (Note: here you see a different pattern; the key idea is agreement in number and gender with the subject.)

Both versions are grammatically correct.

1. With repetition:

   • Ο πεζόδρομος είναι δημόσιος χώρος και είναι πιο ασφαλής για τα παιδιά.
   • Two separate statements:
     • It is a public space.
     • It is safer for children.

   Repeating είναι makes both parts clearly parallel and can slightly emphasize that there are two distinct properties.

2. Without repetition:

   • Ο πεζόδρομος είναι δημόσιος χώρος και πιο ασφαλής για τα παιδιά.
   • The single είναι is understood for both parts.
   • Very natural in modern Greek; sounds a bit more compact.

So:

• Omitting the second είναι is allowed and common.
• Keeping it is also fine and can add a touch of clarity or emphasis.

The preposition για (“for”) in modern Greek almost always takes the accusative case.

• για + accusative:
  • για τα παιδιά = for the children
  • για εσένα = for you
  • για τον φίλο μου = for my friend

So:

• τα παιδιά is accusative plural of το παιδί (the child).
  • Nom. sg.: το παιδί
  • Acc. pl.: τα παιδιά

Των παιδιών is genitive plural (“of the children”), which is not used after για in modern standard Greek.

Therefore:

• για τα παιδιά = correct: for the children
• για των παιδιών = incorrect in modern standard Greek.

Here is a rough pronunciation guide, with stressed syllables in capitals and an approximate English-like transcription:

• Ο πεζόδρομος → o peZO-dro-mos
  
  • ζ like z in zoo
  • δ like th in this
• είναι → EE-ne
• δημόσιος → dhi-MO-si-os
  
  • δ (again) like th in this
• χώρος → HO-ros
  
  • χ is a voiceless sound, like the ch in German Bach or Scottish loch, not like English h or k
• και → ke (or ce, like ke in kettle)
• είναι → EE-ne
• πιο → pio (one syllable, like “pyo”)
• ασφαλής → as-fa-LIS
  
  • final -ής pronounced like -is
• για → ya
• τα παιδιά → ta pe-DHIÁ
  
  • παι sounds like pe in pet but shorter, then διά with stress and δ as th in this

So, smooth sentence-level pronunciation:

• o peZOdromos EEne dhiMOsios HOros ke EEne pio asfaLIS ya ta peDHIÁ.

(Transcription is approximate; main point is where the stress goes and sounds of χ and δ.)

Yes, that alternative is grammatically correct:

• Ο πεζόδρομος είναι πιο ασφαλής για τα παιδιά και δημόσιος χώρος.

Here, a single είναι applies to both:

• πιο ασφαλής για τα παιδιά
• δημόσιος χώρος

This version slightly changes the emphasis:

• The original:
  Ο πεζόδρομος είναι δημόσιος χώρος και είναι πιο ασφαλής για τα παιδιά.
  → first highlights that it’s a public space, then adds that it’s safer for children.
• Your alternative:
  Ο πεζόδρομος είναι πιο ασφαλής για τα παιδιά και δημόσιος χώρος.
  → emphasizes safety for children first, then adds that it’s a public space.

Greek word order is fairly flexible, but:

• You still have to keep adjective–noun agreement correct.
• You must keep elements that belong together (like πιο + adjective, or adjective + noun) in a natural grouping.