Answer:
1. adverb
An adverb is an expression that modifies a verb, adjective and itself (adverb).
Example: She speaks too softly.
Speak is a verb and the word 'softly' gives the expression of the verb more clearly. Softly is an adverb.
2. communication
Communication is the only way to express ideas. This can be in the form of writing, speaking or gestures.
3. Indo-European
This is a family of hundreds of languages spoken in Europe and Asia. Nowadays, those languages become more modern and speak in different European countries.
4. Hellenic
One of the predecessors of ancient Greek was the Hellenistic period. In this period power and cultural influence reached its peak.
5. reflexive pronoun
A pronoun replaces a noun that refers to a subject/object (noun).
6. analytical
The analysis is a detailed study of any matter with reasoning and logic.
7. dialect
Languages spoken by mountaineers in each region/ continent are different but in the same regions, they speak different dialects to their languages.
8. verb
The state of being is a form of action. A word that describes the action known as a verb.
9. noun
The name of the person, thing or place is known as a noun.
10. Aramaic
A group of languages that were spoken by a group of Jews in Syria. Hebrew and Aramaic are related to each other.
11. philologist
Philologist is a study of language history in terms of ethnicity and originality.
12. dominion
Dominion is a supreme power capable to control. Domination linked to dominion.