theater vs parquet circle

theater and parquet circle both are nouns.

Word	Noun	Adjective	Verb	Adverb
theater	Yes	No	No	No
parquet circle	Yes	No	No	No

theater (noun)	parquet circle (noun)
a building where theatrical performances or motion-picture shows can be presented	seating at the rear of the main floor (beneath the balconies)
the art of writing and producing plays
a region in which active military operations are in progress