Το καμαρίνι είναι δίπλα στο σκηνικό.

Καμαρίνι usually means dressing room, especially in a theatre, studio, or performance space. It is the room where actors or performers get ready.

So in this sentence, it refers to the dressing room in a stage or theatre context.

Το is the definite article meaning the.

Greek nouns normally use an article much more regularly than English does.
Here:

• το καμαρίνι = the dressing room

Also, καμαρίνι is a neuter singular noun, and το is the correct definite article for a neuter singular noun in this form.

In Greek, every noun has a grammatical gender: masculine, feminine, or neuter. This is a grammar feature and does not necessarily match natural gender.

Καμαρίνι happens to be a neuter noun, so it takes neuter forms like:

• το καμαρίνι = the dressing room

Many Greek nouns ending in -ι are neuter, so this is a useful pattern to notice.

Because είναι means is or am/are/is from the verb είμαι = to be, and in the third person singular Greek uses είναι for all genders.

So all of these use είναι:

• Ο άντρας είναι... = The man is...
• Η γυναίκα είναι... = The woman is...
• Το καμαρίνι είναι... = The dressing room is...

The verb does not change according to gender here.

Δίπλα means next to, beside, or nearby, depending on context.

In this sentence:

• δίπλα στο σκηνικό = next to the set/scenery

A useful thing to know is that δίπλα is often used in expressions like:

• δίπλα σε
  • noun
• δίπλα από
  • noun

In everyday Greek, all of these can express the idea of being next to something.

Because στο is the normal contraction of:

• σε + το = στο

So:

• στο σκηνικό literally comes from σε το σκηνικό

This is very common in Greek:

• σε + τον = στον
• σε + τη(ν) = στη(ν)
• σε + το = στο

So you should think of στο σκηνικό as to/at/in/on the set, depending on context. After δίπλα, it gives the meaning next to the set.

Σκηνικό usually means set, stage set, or scenery in a theatre or film context.

So:

• το σκηνικό = the set / the scenery

Be careful: it does not usually mean scene in the same way English uses scene for part of a play or movie. It refers more to the physical visual setting.

Good question. After σε, Greek normally takes the accusative case. But many neuter nouns have the same form in the nominative and accusative singular.

So:

• nominative: το σκηνικό
• accusative: το σκηνικό

They look the same, which is why you do not see a visible change here.

The sentence as written is the most neutral and natural order:

• Το καμαρίνι είναι δίπλα στο σκηνικό.

Greek word order is more flexible than English word order, because the endings and articles often make the grammar clear. But this version is the standard, straightforward way to say it.

You might sometimes hear a different order for emphasis, but for learners this is the best pattern to use.

That would sound unnatural in normal Greek.

Greek usually prefers articles in sentences like this, especially when talking about specific things:

• Το καμαρίνι = the dressing room
• το σκηνικό = the set

If you want an indefinite meaning, you would normally say something like:

• Ένα καμαρίνι είναι δίπλα σε ένα σκηνικό.
  = A dressing room is next to a set.

But for the original sentence, the articles are the natural choice.

A simple pronunciation guide would be:

• To kamaríni íne dípla sto skinikó.

A few notes:

• καμαρίνι has the stress on ρί: ka-ma-RÍ-ni
• είναι is pronounced roughly Í-ne
• δίπλα has the stress on δί: DÍ-pla
• σκηνικό has the stress on the last syllable: ski-ni-KÓ

The written accent marks show you which syllable is stressed.

Yes. Δίπλα is very common and can be used with many kinds of nouns.

For example:

• Το σπίτι είναι δίπλα στο σχολείο.
  = The house is next to the school.
• Κάθομαι δίπλα στον φίλο μου.
  = I am sitting next to my friend.

So in your sentence, it works the same way: it shows that one thing is located beside another.