Ο συντονιστής εκκένωσης ελέγχει το σχεδιάγραμμα διαφυγής.

They are in the genitive singular.

Their basic dictionary forms are:

• η εκκένωση = evacuation
• η διαφυγή = escape

In this sentence, Greek uses the genitive to link one noun to another:

• συντονιστής εκκένωσης = evacuation coordinator
• σχεδιάγραμμα διαφυγής = escape diagram / escape plan

This is very common in Greek. Where English often uses a noun as a modifier, Greek often uses a genitive noun instead.

Because Greek often leaves out the article in this kind of label-like or type/classification construction.

So:

• συντονιστής εκκένωσης means something like evacuation coordinator as a role or title
• σχεδιάγραμμα διαφυγής means escape diagram/plan as a type of diagram

If you added the article, the meaning would become more specific:

• ο συντονιστής της εκκένωσης = the coordinator of the evacuation
• το σχεδιάγραμμα της διαφυγής = the diagram of the escape

So the version without the article sounds more like a standard designation.

Here is the structure:

• Ο συντονιστής εκκένωσης = the subject
• ελέγχει = the verb
• το σχεδιάγραμμα διαφυγής = the direct object

More specifically:

• Ο = masculine singular definite article, nominative
• συντονιστής = masculine singular noun, nominative
• εκκένωσης = genitive singular noun modifying συντονιστής
• ελέγχει = 3rd person singular verb
• το = neuter singular definite article, accusative
• σχεδιάγραμμα = neuter singular noun, accusative
• διαφυγής = genitive singular noun modifying σχεδιάγραμμα

ελέγχει is:

• 3rd person singular
• present tense
• from the verb ελέγχω

So the dictionary form is ελέγχω.

In English, this kind of Greek present can correspond to:

• checks
• is checking

Which one sounds best depends on context.

Usually, in a sentence like this, checks is the best choice.

The verb ελέγχω can mean things like:

• check
• inspect
• verify
• audit
• control

But in safety or workplace contexts, ελέγχει το σχεδιάγραμμα διαφυγής most naturally means that the coordinator is checking/inspecting the escape plan, not controlling it in the sense of operating it.

So this is a good verb to learn as to check / inspect first.

Because the two nouns have different grammatical genders:

• συντονιστής is masculine
• σχεδιάγραμμα is neuter

Greek articles must agree with the noun in gender, number, and case.

So here you get:

• ο συντονιστής = masculine singular nominative
• το σχεδιάγραμμα = neuter singular accusative

Also notice that ο συντονιστής is the subject, while το σχεδιάγραμμα is the object.

Yes. Greek word order is more flexible than English word order.

The neutral, straightforward order here is:

• Ο συντονιστής εκκένωσης ελέγχει το σχεδιάγραμμα διαφυγής.

But other orders are possible for emphasis, for example:

• Το σχεδιάγραμμα διαφυγής ελέγχει ο συντονιστής εκκένωσης.

That would put more focus on the escape plan.

Because Greek marks relationships with articles and case endings, word order does not carry quite as much grammatical weight as in English. Still, the original version is the most natural default order.

They are related, but not exactly the same.

• σχέδιο is a broad word: plan, design, scheme, draft
• σχεδιάγραμμα is more specifically a diagram, schematic, or layout drawing

So in this sentence, σχεδιάγραμμα διαφυγής suggests a more visual plan, such as a posted evacuation or escape diagram.

If you used σχέδιο διαφυγής, that would sound more like an escape plan in the general sense.

A common feminine form is:

• Η συντονίστρια εκκένωσης ελέγχει το σχεδιάγραμμα διαφυγής.

So:

• ο συντονιστής = the male coordinator
• η συντονίστρια = the female coordinator

In real usage, job-title feminines can vary a bit, but συντονίστρια is a normal and common form.

The accent mark shows which syllable is stressed.

In this sentence:

• συντονιστής
• εκκένωσης
• ελέγχει
• σχεδιάγραμμα
• διαφυγής

So when reading aloud, make sure those syllables get the stress.

This is especially important in Greek, because stress is part of the normal written form and can help you identify words and endings more easily.