chicken coop vs henhouse

chicken coop and henhouse both are nouns.

Word	Noun	Adjective	Verb	Adverb
chicken coop	Yes	No	No	No
henhouse	Yes	No	No	No

As nouns, chicken coop and henhouse are synonyms defined as:

Other synonyms of chicken coop include coop, hencoop.

chicken coop (noun)	henhouse (noun)
a farm building for housing poultry	a farm building for housing poultry