Ova kvalifikacija je važna.

Because ova has to agree with kvalifikacija, which is a feminine singular noun in the nominative case.

Serbian this changes form depending on gender:

• ovaj = masculine
• ova = feminine
• ovo = neuter

Since kvalifikacija is feminine, you say ova kvalifikacija = this qualification.

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

That is why both the demonstrative and the adjective also use feminine forms:

• ova kvalifikacija
• kvalifikacija je važna

Everything agrees with the feminine noun.

Because adjectives in Serbian must agree with the noun they describe in gender, number, and case.

The base adjective is važan = important, but its form changes:

• važan = masculine singular
• važna = feminine singular
• važno = neuter singular

Since kvalifikacija is feminine singular, the correct form is važna.

Je is the 3rd person singular present tense of the verb biti = to be.

So:

• je = is

In this sentence:

• Ova kvalifikacija je važna.
• This qualification is important.

Unlike in some other Slavic languages, Serbian normally does use the verb to be in sentences like this.

In standard Serbian, no, you normally keep je in this kind of sentence.

So the normal sentence is:

• Ova kvalifikacija je važna.

Leaving it out would sound incomplete in ordinary standard usage.

The most neutral word order is:

• Ova kvalifikacija je važna.

But Serbian word order is more flexible than English, especially for emphasis. For example, you may also hear:

• Važna je ova kvalifikacija.

That sounds more marked or emphatic, something like This qualification is important with extra stress on important.

One important thing: je is a clitic, so it usually appears near the second position in the sentence or phrase.

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

• ova = nominative feminine singular
• kvalifikacija = nominative singular

The adjective važna is also nominative feminine singular because it matches the subject in this predicate structure.

Yes. Both the demonstrative and the noun would change, and the adjective would change too if needed.

For example:

• ova kvalifikacija = nominative
• ove kvalifikacije = genitive / also nominative plural depending on context
• ovu kvalifikaciju = accusative singular

So Serbian grammar depends heavily on case endings, not just word order.

The dictionary form is usually given as the masculine singular form:

• važan = important

From that, you get:

• važna = feminine singular
• važno = neuter singular
• važni / važne / važna = plural forms, depending on gender and pattern

So when you look up važna, you should search for važan.

Usually yes. Ova is the feminine form of this.

Serbian makes a clearer distinction by gender:

• ovaj = this (masculine)
• ova = this (feminine)
• ovo = this (neuter)

If you wanted that, Serbian commonly uses forms like:

• ta kvalifikacija = that qualification

A rough pronunciation is VAZH-na.

The letter ž sounds like the s in measure or the g in genre.

So:

• važna ≈ VAZH-na

Stress can vary by accent system and region, but for a learner, getting the ž sound right is the main thing.

Serbian does not use articles like English a and the.

So Serbian often expresses definiteness through context, word order, or words like ovaj/ova/ovo (this) and taj/ta/to (that).

That is why ova kvalifikacija naturally means this qualification, without needing an article.

Yes. That would mean That qualification is important.

Compare:

• Ova kvalifikacija je važna. = This qualification is important.
• Ta kvalifikacija je važna. = That qualification is important.

The grammar stays the same; only the demonstrative changes.