A kompozíció és a képkivágás érdekes.

In Hungarian, the present-tense 3rd-person form of to be is usually omitted in simple sentences like this.

So:

• A kompozíció érdekes. = The composition is interesting.
• A képkivágás érdekes. = The cropping is interesting.

Hungarian does use van / vannak in other situations, but not normally in a basic X is adjective sentence in the present tense.

Compare:

• A kompozíció érdekes. = The composition is interesting.
• A kompozíció érdekes volt. = The composition was interesting.

In the past tense, the verb appears.

A is the definite article, so it means the.

Hungarian has two forms of the definite article:

• a before a consonant
• az before a vowel

Since kompozíció and képkivágás both begin with consonant sounds, the correct form is a:

• a kompozíció
• a képkivágás

If the next word started with a vowel, you would use az instead.

Because both nouns are definite: the composition and the cropping.

In Hungarian, when two definite nouns are linked by és (and), it is very normal to repeat the article:

• a kompozíció és a képkivágás

This is the natural way to show that both nouns are definite.

Képkivágás is a compound noun, which is very common in Hungarian.

It is made up of:

• kép = picture, image
• kivágás = cutting out, cropping

So the literal sense is something like image-cropping or picture crop. In context, it can mean cropping, framing, or the way the image is cropped.

Hungarian often writes compound nouns as one word, so képkivágás is written together.

That is a very normal neutral word order in Hungarian.

The structure here is:

• A kompozíció és a képkivágás = the subject
• érdekes = the predicate adjective

So the sentence is basically:

• The composition and the cropping — interesting.

Since the present-tense is/are is omitted, the adjective comes at the end.

Hungarian word order is flexible, but this version sounds neutral and natural.

That is a very good question.

Érdekes is the basic singular form, while érdekesek is the plural predicative form.

With two coordinated nouns, many learners will expect:

• A kompozíció és a képkivágás érdekesek.

And that is often the safest textbook-style choice if you mean that both things are separately interesting.

However, érdekes can also occur if the speaker is treating the composition and the cropping together as one overall impression or one combined feature.

So:

• érdekesek = clearly plural, two separate things are interesting
• érdekes = can suggest a more unified idea

For a learner, érdekesek is often the easier and safer form to remember in clearly plural situations.

A few useful points:

• Hungarian stress is almost always on the first syllable of each word.
• The accents on vowels mostly show vowel length.

Roughly:

• A = short aw/o-like sound
• kompozíció = KOM-po-zí-ci-ó
• és = long ay-like sound
• a = again the
• képkivágás = KÉP-ki-vá-gás
• érdekes = ÉR-de-kesh

A rough English-style approximation of the whole sentence would be:

aw KOM-po-zee-tsee-oh ay aw KAYP-kee-vaa-gaash AIR-deh-kesh

That is only approximate, but it helps with the rhythm.

Yes. Hungarian word order is flexible, and changing it can change the emphasis.

The neutral version is:

• A kompozíció és a képkivágás érdekes.

If you move érdekes to the front:

• Érdekes a kompozíció és a képkivágás.

that gives more emphasis to interesting, almost like What is interesting is the composition and the cropping or The composition and the cropping are interesting with extra focus.

So the original sentence is the most neutral, straightforward version.