rest house vs edifice

rest house and edifice both are nouns.

Word	Noun	Adjective	Verb	Adverb
rest house	Yes	No	No	No
edifice	Yes	No	No	No

As nouns, edifice is a hypernym of rest house; that is, edifice is a word with a broader meaning than rest house:

rest house: a building used for shelter by travelers (especially in areas where there are no hotels)
edifice: a structure that has a roof and walls and stands more or less permanently in one place

Other hypernyms of rest house include building.

rest house (noun)	edifice (noun)
a building used for shelter by travelers (especially in areas where there are no hotels)	a structure that has a roof and walls and stands more or less permanently in one place