Kecelja je nova.

Because kecelja is a feminine singular noun, and Serbian adjectives must agree with the noun in gender, number, and case.

• masculine: nov
• feminine: nova
• neuter: novo

So:

• nov kaput = a new coat
• nova kecelja = a new apron
• novo selo = a new village

In Kecelja je nova, both kecelja and nova are feminine singular nominative.

Je means is. It is the 3rd person singular form of the verb biti (to be) in the present tense.

So the structure is:

• Kecelja = the apron / apron
• je = is
• nova = new

Literal structure: Apron is new
Natural English: The apron is new or An apron is new, depending on context.

Serbian normally has no articles. There is no direct equivalent of English a/an or the in ordinary sentences.

So Kecelja je nova could mean:

• The apron is new
• An apron is new

In real use, context tells you which meaning is intended. Very often, English needs an article where Serbian does not.

Usually, yes. In Serbian, nouns ending in -a are very often feminine.

So kecelja is feminine, and that is why the adjective also takes the feminine form nova.

This is a strong pattern, but not an absolute rule for every noun in the language. Still, for a beginner, -a = often feminine is a very useful guideline.

Yes, Serbian word order is more flexible than English.

The neutral, straightforward sentence is:

• Kecelja je nova. = The apron is new.

But you can also say:

• Nova je kecelja.

That version puts more focus on nova (new), as if contrasting it with something else.

You can also place the adjective before the noun when it is directly attached to it:

• Nova kecelja = a new apron / the new apron

So:

• Nova kecelja je ovde. = The new apron is here.
• Kecelja je nova. = The apron is new.

Those are different structures:

• nova kecelja = adjective + noun
• kecelja je nova = noun + to be
  • predicate adjective

In Serbian, after the verb biti (to be), a predicate adjective normally agrees with the subject and appears in the nominative.

So in:

• Kecelja je nova.

both kecelja and nova are nominative feminine singular.

This is similar to:

• Kuća je velika. = The house is big.
• Soba je mala. = The room is small.

A simple learner-friendly approximation is:

• Kecelja ≈ KEH-tsel-ya
• je ≈ yeh
• nova ≈ NOH-va

A few useful pronunciation notes:

• j in Serbian is like English y in yes
• c is pronounced like ts
• lj is a special sound, roughly like a soft ly

So kecelja has that lj sound near the end.

In this kind of present-tense statement, je is normally kept:

• Kecelja je nova.

Unlike in some languages, you do not usually drop is in standard Serbian present-tense sentences like this.

So Kecelja nova would sound incomplete in standard usage.

It is in the nominative singular, because it is the subject of the sentence.

Basic form:

• kecelja = apron

In this sentence:

• Kecelja je nova. = The apron is new.

If the noun changed role in a sentence, its form could change depending on the case. For example, after some prepositions or as a direct object in certain contexts, Serbian nouns may appear in different case forms.

The plural would be:

• Kecelje su nove. = The aprons are new.

Changes:

• kecelja → kecelje (plural noun)
• je → su (are)
• nova → nove (feminine plural adjective)

This shows agreement again: the adjective and verb both change to match the noun.

Yes, kecelja is the normal word for apron.

It is a regular everyday noun, especially in contexts like cooking, cleaning, crafts, or work clothes. For a learner, it is also a nice example because it clearly shows feminine agreement:

• kecelja
• nova kecelja
• Kecelja je nova.