Bijeli ljiljan je u vazi na stolu.

Because bijeli has to agree with ljiljan in gender, number, and case.

• ljiljan = masculine singular
• the subject is in the nominative
• so the adjective also takes the masculine singular nominative form: bijeli

So:

• bijeli ljiljan = white lily
• if the noun changed, the adjective would change too

For example:

• bijela vaza = white vase (feminine)
• bijelo cvijeće = white flowers / white floral matter (neuter)

Ljiljan means lily.

It is a masculine noun in Croatian, even though in English the word lily does not show grammatical gender.

Its basic dictionary form is:

• ljiljan = lily

In this sentence it is in the nominative singular because it is the subject.

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

So:

• je = is

The sentence structure is:

• Bijeli ljiljan = the white lily
• je = is
• u vazi na stolu = in the vase on the table

So the whole sentence means:

• The white lily is in the vase on the table.

Croatian often uses forms of biti just like English uses is / am / are.

Because the preposition u here means in, expressing location, not movement. When u expresses location, it takes the locative case.

The noun vaza changes like this:

• nominative: vaza = vase
• locative: vazi = in/on/at the vase, depending on context with a preposition

So:

• u vazi = in the vase

Compare:

• Vaza je na stolu. = The vase is on the table.
• Cvijet je u vazi. = The flower is in the vase.
• Stavljam cvijet u vazu. = I am putting the flower into the vase.

That last example uses u + accusative because it shows movement into something.

Because na here means on, and it describes location, so the noun goes into the locative case.

The noun stol changes like this:

• nominative: stol = table
• locative: stolu = on the table / at the table, depending on context

So:

• na stolu = on the table

Compare location vs movement:

• Vaza je na stolu. = The vase is on the table.
• Stavljam vazu na stol. = I am putting the vase onto the table.

Here:

• na + locative = location
• na + accusative = movement onto

They describe two different spatial relationships:

• u vazi = in the vase
• na stolu = on the table

So the lily is:

1. in the vase
2. and the vase is on the table

This layered structure is very common in Croatian.

A helpful way to see it is:

• [Bijeli ljiljan] je [u vazi] [na stolu].

The second phrase na stolu most naturally describes vazi:

• the vase that is on the table

In the most natural reading, na stolu describes the vase.

So the sentence is understood as:

• The white lily is in the vase that is on the table.

That is the normal interpretation because:

• u vazi forms a close unit first
• then na stolu tells you where that vase is

English works similarly:

• The white lily is in the vase on the table.

In theory, context can sometimes allow different interpretations, but the default reading is about the vase being on the table.

Croatian does not have articles like English a/an/the.

So:

• bijeli ljiljan can mean a white lily or the white lily
• vaza can mean a vase or the vase

The exact meaning depends on context.

In this sentence, English naturally uses:

• The white lily is in the vase on the table.

But Croatian does not need separate article words to express that.

Yes, Croatian word order is fairly flexible, although some orders sound more neutral than others.

The most neutral version here is:

• Bijeli ljiljan je u vazi na stolu.

You could also hear:

• U vazi na stolu je bijeli ljiljan.
• Na stolu je vaza, a u vazi je bijeli ljiljan. (if expanding the idea)

Changing word order usually changes focus or emphasis, not the basic meaning.

For example:

• Bijeli ljiljan je u vazi na stolu. = neutral
• U vazi na stolu je bijeli ljiljan. = emphasis on where it is

Because ljiljan is the subject of the sentence, so it stays in the nominative.

The verb je does not force the subject into another case here. What changes are the nouns inside the prepositional phrases:

• u vazi → locative after u for location
• na stolu → locative after na for location

So only the nouns governed by those prepositions change case.

A common difficulty for English speakers is the sound lj.

• lj is a single Croatian sound, similar to the lli in some pronunciations of million, but cleaner and more clearly one unit

Rough pronunciation help:

• ljiljan ≈ LYEE-lyan
• bijeli ≈ BYE-yeh-lee or bee-YEH-lee, depending on how narrowly you represent it for English speakers

A few pronunciation notes:

• j is pronounced like English y
• lj is not a hard English l
  • j sequence; it is a special palatal sound
• stress can vary by dialect and teaching style, so beginner materials often focus first on getting the sounds right

Here is the full breakdown:

• bijeli ljiljan → nominative singular

  • subject of the sentence

• vazi (from vaza) → locative singular

  • used after u to show location

• stolu (from stol) → locative singular

  • used after na to show location

So the pattern is:

• subject in nominative
• location phrases with prepositions using locative

In standard Croatian, in a normal present-tense sentence like this, you usually keep je.

So:

• Bijeli ljiljan je u vazi na stolu. = correct standard sentence

Leaving out je would generally sound incomplete or non-standard in this context.

Croatian does omit to be in some special styles or structures much less freely than some other Slavic languages, but for a learner, the safe rule is:

• in ordinary present-tense X is Y / X is somewhere sentences, use sam, si, je, smo, ste, su

Yes, grammatically it can, because Croatian has no articles.

So without context, the sentence can correspond to several English versions, such as:

• The white lily is in the vase on the table.
• A white lily is in a vase on a table.
• The white lily is in a vase on the table.

In real use, context tells you which one is intended. If this sentence appeared in a textbook with a fixed translation, that translation is just the most natural choice for that context.