Ο συλλέκτης ελέγχει τη συλλογή.

They are definite articles, the Greek equivalent of the.

• ο = the for a masculine singular nominative noun
• τη = the for a feminine singular accusative noun

So:

• Ο συλλέκτης = the collector → the subject
• τη συλλογή = the collection → the direct object

Greek articles change form much more than English the does.

Greek often shows this through case.

• Ο συλλέκτης is in the nominative case, which usually marks the subject
• τη συλλογή is in the accusative case, which usually marks the direct object

So the collector is doing the action, and the collection is receiving the action.

In this sentence, the articles are especially helpful, because they show the grammatical role clearly.

Both forms exist, but τη συλλογή is the standard form here.

The full accusative feminine article is την, but in Modern Greek the final -ν is often dropped before many consonants. Since συλλογή starts with σ, you commonly get:

• τη συλλογή

You may still see or hear την συλλογή, but τη συλλογή is completely normal and expected.

Because many feminine nouns in Modern Greek have the same form in the singular nominative and accusative.

So:

• η συλλογή = the collection as subject
• τη συλλογή = the collection as object

The noun stays the same, but the article changes, and that is what tells you the case.

Because it is the third person singular present tense form of ελέγχω.

The subject is Ο συλλέκτης = the collector, which is he / she / it form grammatically, so the verb must match:

• εγώ ελέγχω = I check
• εσύ ελέγχεις = you check
• αυτός / αυτή / αυτό ελέγχει = he / she / it checks

So Ο συλλέκτης ελέγχει means the collector checks.

The given order is the most neutral one: subject + verb + object.

But Greek word order is more flexible than English because case endings and articles help show who is doing what. For example, you could also say:

• Τη συλλογή ελέγχει ο συλλέκτης

That might sound more emphatic, like It is the collection that the collector is checking.

So the original order is the basic one, but it is not the only possible one.

Yes. They are clearly related in meaning and come from the same general word family:

• συλλέκτης = collector
• συλλογή = collection

This is useful vocabulary to notice, because Greek often builds related nouns from the same root. If you learn one, it can help you recognize the other.

A rough pronunciation is:

o si-LEK-tis e-LENG-hee ti si-lo-YEE

A few important points:

• συλλέκτης has the stress on -λέκ-
• ελέγχει has the stress on -λέγ-
• συλλογή has the stress on the last syllable, -γή
• In ελέγχει, the γχ combination sounds roughly like ngh or ng-h, not like English g

The written stress marks in Greek are important and should be learned with the word.

Because they belong to different gender and declension patterns.

• συλλέκτης is a masculine noun
• συλλογή is a feminine noun

Greek nouns do not all follow one single pattern. Their endings often tell you:

• gender
• case
• number

So the different endings are normal and are part of how Greek grammar works.

Usually, no—not in an ordinary sentence like this.

Greek uses articles very regularly, often more than English does. So:

• Ο συλλέκτης ελέγχει τη συλλογή sounds natural
• Συλλέκτης ελέγχει συλλογή sounds unnatural in normal speech

Without the articles, it would sound more like a headline, note, or very unusual style rather than a standard sentence.