Elena: She is absurd about her boyfriend.
correct: Her boyfriend is absurd.
Explanation: Absurd- very silly. The word absurd is adjective. Adjectives are words that describe nouns.

Elena: My dog is exotic.
correct: Your answer is correct Elena.
Explanation: Dog is an example of noun. Noun is a word that refers to a person, place, object, event, substance, idea, feeling or quality. Exotic is an adjective.

Elena: Famous actor is suicide. His name is Gukyoung Jang.
correct: A famous actor named Gukyoung Jang commit suicide.
Explanation: A is an article that signals that the noun modified is indefinite, referring to any member of a group. Use a + singular noun beginning with a consonant.

Elena: Autumnal fad color is vinicolor.
correct: Vinicolor is fad during autumn season.
Explanation: fad -  a style, activity or interest that is very popular for a short period of time. I re write your sentence to express a complete Idea.

Elena: I have a friend. He is househusband. Because his wife doing MBA.
correct: I have a friend and he is a househusband because his wife is taking MBA. 
Explanation:  A is an article that signals that the noun modified is indefinite, referring to any member of a group. Use a + singular noun beginning with a consonant.