outhouse vs outbuilding

outhouse and outbuilding both are nouns.

Word	Noun	Adjective	Verb	Adverb
outhouse	Yes	No	No	No
outbuilding	Yes	No	No	No

As nouns, outbuilding is a hypernym of outhouse; that is, outbuilding is a word with a broader meaning than outhouse:

outhouse: a small outbuilding with a bench having holes through which a user can defecate
outbuilding: a building that is subordinate to and separate from a main building

outhouse (noun)	outbuilding (noun)
a small outbuilding with a bench having holes through which a user can defecate	a building that is subordinate to and separate from a main building