Cases of word usage

1) doing the duties of another person for a limited time (acting)

2) a person or business that represents, or that manages or arranges the affairs of, another or others (agent)

3) a country, person, deliberately attacking another (aggressor)

4) like one another (alike)

5) the money (to be) paid by one person to another by a judge's order, after a legal separation or divorce (alimony)

6) an indirect reference often by using a figure of speech to another famous event or person (allusion)

7) a person, state etc giving help or support to another (ally)

8) a word made by changing the order of the letters in another word (anagram)

9) a word in one language with the same origin as a word in another language (analogue)

10) a word that is country in meaning to another (antonym)