theater vs dramatic irony

theater and dramatic irony both are nouns.

Word	Noun	Adjective	Verb	Adverb
theater	Yes	No	No	No
dramatic irony	Yes	No	No	No

theater (noun)	dramatic irony (noun)
a building where theatrical performances or motion-picture shows can be presented	(theater) irony that occurs when the meaning of the situation is understood by the audience but not by the characters in the play
the art of writing and producing plays
a region in which active military operations are in progress