O púcaro está ao lado da bilha.

Because the sentence is describing location, and in Portuguese location is normally expressed with estar, not ser.

• estar = to be, in a temporary state or position
• ser = to be, in an essential or permanent sense

So:

• O púcaro está ao lado da bilha = The jug is next to the pitcher

Even if the objects stay there for a long time, Portuguese still uses estar for physical position.

Ao lado de is a fixed expression meaning next to or beside.

It breaks down like this:

• a + o = ao
• lado = side
• de = of / from

So literally it is something like at the side of.

Examples:

• ao lado da bilha = next to the pitcher
• ao lado do copo = next to the glass
• ao lado da porta = next to the door

You should learn ao lado de as a chunk, because that is how it is naturally used.

Because in Portuguese, de + a contracts to da.

So:

• de + a = da
• de + o = do
• de + as = das
• de + os = dos

That is why ao lado da bilha is the correct form.

Similarly:

• ao lado do livro
• ao lado da mesa
• ao lado dos pratos

These contractions are required in normal Portuguese.

Portuguese uses definite articles much more often than English.

So where English might say:

• Jug is next to pitcher — which sounds unnatural in English anyway

Portuguese normally says:

• O púcaro está ao lado da bilha

The articles help identify the nouns and sound natural. In Portuguese, using articles with common nouns is very common.

Here:

• o = the, masculine singular
• a = the, feminine singular

And because a comes after de, it becomes da.

You usually learn the noun together with its article:

• o púcaro
• a bilha

That is the safest approach.

There are patterns in Portuguese:

• nouns ending in -o are often masculine
• nouns ending in -a are often feminine

So these two follow a common pattern:

• púcaro → masculine
• bilha → feminine

But not every noun follows the pattern, so it is best to memorise the article with the word.

They are real Portuguese words, but they may sound somewhat traditional, regional, or literary depending on context.

• púcaro usually refers to a small earthenware vessel, pot, or jug
• bilha usually refers to a jug, pitcher, or container, often for liquids

In modern everyday speech, people might often use other words depending on the object, such as:

• jarro
• cântaro
• garrafa
• recipiente

So the sentence is perfectly valid, but the vocabulary may feel a bit less basic than very common household words.

The word púcaro has stress on the first syllable:

• PÚ-ca-ro

The accent mark in ú shows where the stress goes.

Without the accent, a learner might stress it incorrectly. The accent helps you know the correct pronunciation.

Also:

• está has stress on the last syllable: es-TÁ

So the sentence rhythm is roughly:

• O PÚ-ca-ro es-TÁ ao LA-do da BI-lha

The exact pronunciation varies a little by region in Portugal, but the stress pattern stays the same.

It is one of the most common and neutral ways.

You could also hear:

• junto da bilha = by / next to the pitcher
• perto da bilha = near the pitcher

But they are not always exactly the same:

• ao lado de usually means directly beside
• perto de means near, not necessarily immediately beside
• junto de / junto a can mean close to, beside, attached to, depending on context

So ao lado da bilha is a very good translation for next to the pitcher.

Yes, but the normal, neutral order here is:

• O púcaro está ao lado da bilha

That is:

• subject + verb + place expression

You could change the order for emphasis, for example:

• Ao lado da bilha está o púcaro

This is grammatical, but less neutral and more marked. It might be used in description, narration, or to focus on the location first.

For everyday use, the original order is the best one to learn first.

Because o púcaro is already the subject, so a separate pronoun is unnecessary.

Portuguese usually does not add a pronoun when the noun is already there:

• O púcaro está ao lado da bilha
  not
• O púcaro ele está ao lado da bilha

Adding ele here would normally sound wrong unless there were some very special emphasis.

The grammar is basically the same:

• O púcaro está ao lado da bilha

would still be understandable.

However, the vocabulary might feel unusual in Brazil, especially púcaro and possibly bilha, depending on region and context. A Brazilian speaker might more naturally use different nouns for the objects.

The structure itself is the same:

• estar for location
• ao lado de
• contractions like da

So the main difference is more about word choice than grammar.