critic vs drama critic

critic and drama critic both are nouns.

Word	Noun	Adjective	Verb	Adverb
critic	Yes	No	No	No
drama critic	Yes	No	No	No

As nouns, drama critic is a hyponym of critic; that is, drama critic is a word with a more specific, narrower meaning than critic:

critic: a person who is professionally engaged in the analysis and interpretation of works of art
drama critic: a critic of theatrical performances

Other hyponyms of critic include art critic, theater critic, literary critic, music critic, newspaper critic.

critic (noun)	drama critic (noun)
a person who is professionally engaged in the analysis and interpretation of works of art	a critic of theatrical performances
anyone who expresses a reasoned judgment of something
someone who frequently finds fault or makes harsh and unfair judgments