Podejście jest trudne, ale zejście jest łatwe.

Because podejście and zejście are neuter singular nouns.

In Polish, adjectives must agree with the noun in gender, number, and case. So:

• podejście = neuter singular
• zejście = neuter singular

That means the adjective must also be neuter singular:

• trudne = difficult
• łatwe = easy

Compare:

• trudny = masculine singular
• trudna = feminine singular
• trudne = neuter singular

So Podejście jest trudne literally matches as The ascent is difficult.

In this sentence, they most naturally mean:

• podejście = ascent / climb up / uphill approach
• zejście = descent / way down / going down

This sounds very natural in a hiking or mountain context.

Both words come from verbs:

• podejść = to go up to / approach / climb up
• zejść = to go down / descend

So these nouns name the action or route connected with going up and going down.

A useful thing to know: podejście can also mean approach in an abstract sense, like an approach to a problem, but in this sentence, paired with zejście, the physical meaning is clearly intended.

Yes, one jest can be omitted, but repeating it is completely normal and clear.

The full sentence:

• Podejście jest trudne, ale zejście jest łatwe.

A slightly shorter version:

• Podejście jest trudne, ale zejście łatwe.

Both are grammatical. Repeating jest makes the structure more explicit and balanced. Omitting the second jest is a bit more compact and stylistic.

For learners, the repeated version is easier to understand and very natural.

Yes, a is possible, but ale gives a stronger sense of but.

• ale = but
• a = often and/but/whereas, with a softer contrast

So:

• Podejście jest trudne, ale zejście jest łatwe.
  = The ascent is difficult, but the descent is easy.

• Podejście jest trudne, a zejście jest łatwe.
  = still correct, but feels more like The ascent is difficult, whereas the descent is easy.

In this sentence, ale emphasizes the contrast more strongly.

It is an adjective.

In English, after to be, we use an adjective too:

• The ascent is difficult
• The descent is easy

Polish works the same way here:

• podejście jest trudne
• zejście jest łatwe

So trudne and łatwe are predicate adjectives agreeing with the noun.

They are not adverbs.

Compare:

• adjective: trudne podejście = a difficult ascent
• adverb: trudno = with difficulty / it is difficult

Yes. Polish word order is fairly flexible.

The neutral order here is:

• Podejście jest trudne, ale zejście jest łatwe.

But you could also say:

• Trudne jest podejście, ale łatwe jest zejście.

That sounds more emphatic or literary. The basic meaning stays the same, but the focus changes.

For everyday use, the original version is the most natural and straightforward.

Because Polish has no articles.

English distinguishes between:

• a climb
• the climb

Polish usually does not mark that difference with a separate word. So:

• podejście can mean an ascent, the ascent, or just ascent, depending on context.

You understand whether it is definite or indefinite from the situation, not from an article.

They are nouns.

Even though they come from verbs, in this sentence they behave as nouns:

• podejście = ascent / approach
• zejście = descent

You can tell they are nouns because they are the subjects of the sentence and they pair with jest plus agreeing adjectives:

• Podejście jest trudne.
• Zejście jest łatwe.

If they were verbs, the sentence would be built very differently.

A rough pronunciation guide:

• podejście ≈ po-DAY-sh-cheh
• zejście ≈ ZAY-sh-cheh

A few useful details:

• j in Polish sounds like English y in yes
• ś is a soft sh sound
• ście often sounds roughly like sh-che

So -ejście has that compact cluster English speakers often find tricky at first.

It helps to say it slowly:

• po-dej-ście
• zej-ście

Then speed it up.

Yes, definitely.

Podejście is a very common word in abstract contexts too, for example:

• To dobre podejście. = That’s a good approach.
• Mam inne podejście do tego problemu. = I have a different approach to this problem.

But when it appears together with zejście, the physical meaning ascent / climb up is much more likely.

So the surrounding words strongly guide the meaning.

Most likely, yes, or at least about moving uphill and downhill in a physical place.

Because:

• podejście often suggests an uphill section
• zejście suggests the way down

So a very natural context is:

• hiking
• mountain trails
• climbing routes
• steep streets or paths

It could also be used more generally for any situation involving going up and down, but the hiking interpretation is the most immediate one.

They are in the nominative singular.

They are the subjects of the two clauses:

• Podejście jest trudne
• zejście jest łatwe

In Polish, the subject of a sentence is typically in the nominative case.

That is also why the adjectives are in nominative singular neuter:

• trudne
• łatwe

Yes, that is a very reasonable English rendering.

Even though podejście and zejście are nouns, English often prefers a verbal expression:

• Going up is difficult, but going down is easy.

Or:

• The climb up is difficult, but the way down is easy.

Or:

• The ascent is difficult, but the descent is easy.

Which translation sounds best depends on style and context, but the Polish structure itself uses nouns.