Registracija je nova.

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

So:

• Registracija = registration
• je = is
• nova = new

Structure: Registracija je nova. = Registration is new.

Because nova has to agree with registracija in gender, number, and case.

Registracija is:

• feminine
• singular
• nominative

So the adjective nov (new) must also be:

• feminine
• singular
• nominative

That gives nova.

Compare:

• nov = masculine singular
• nova = feminine singular
• novo = neuter singular

In Serbian, many nouns ending in -a are feminine, and registracija is one of them.

That is why you get:

• ta registracija = that registration
• nova registracija = new registration

Its feminine gender also controls the adjective form, so you say nova, not nov.

It is in the nominative case.

Why? Because registracija is the subject of the sentence, and the subject is normally in the nominative.

Also, after je in this kind of sentence, the adjective nova is also in the nominative:

• Registracija je nova.

So both words are in forms that match a feminine singular nominative pattern.

Serbian does not use articles like English a/an/the.

So Registracija je nova. can mean things like:

• The registration is new.
• A registration is new.
• Registration is new.

The exact English translation depends on context.

Serbian usually leaves that information to:

• context
• word order
• extra words like ta (that), ova (this), etc.

For example:

• Ta registracija je nova. = That registration is new.
• Ova registracija je nova. = This registration is new.

Yes, the structure is different.

• Registracija je nova. = The registration is new.
  This is a full sentence: noun + verb + adjective.

• Nova registracija = new registration
  This is just a noun phrase, not a full sentence.

So:

• Registracija je nova. tells you something about the registration.
• Nova registracija simply names or describes it.

Yes, Serbian word order is more flexible than English, though not always with exactly the same emphasis.

The neutral order here is:

• Registracija je nova.

You may also hear:

• Nova je registracija.

That can sound more marked or emphatic, depending on context, as if emphasizing new.

For a learner, the safest basic version is:

• Registracija je nova.

A rough pronunciation guide for English speakers is:

• Registracija ≈ reh-ghee-strah-TSEE-yah
• je ≈ yeh
• nova ≈ NOH-vah

So the whole sentence is roughly: reh-ghee-strah-TSEE-yah yeh NOH-vah

A couple of useful notes:

• j in Serbian is pronounced like English y in yes
• cij in -cija often sounds like tsee-yah

You make it negative by changing je to nije:

• Registracija nije nova. = The registration is not new.

So:

• je = is
• nije = is not

A common way is:

• Da li je registracija nova? = Is the registration new?

You may also hear:

• Je li registracija nova?

Both are used, but Da li je... is often easier for learners to build correctly.

Often yes, but the exact use depends on context.

Registracija can refer to things like:

• registration as a process
• a registration record
• vehicle registration
• sign-up/registration in an administrative sense

So although it often matches English registration, the most natural translation can vary by situation.

In this sentence, since you already know the meaning from context, the important grammar point is that registracija is a feminine noun, which is why the sentence ends with nova.