teashop vs teahouse

teashop and teahouse both are nouns.

Word	Noun	Adjective	Verb	Adverb
teashop	Yes	No	No	No
teahouse	Yes	No	No	No

As nouns, teashop and teahouse are synonyms defined as:

teashop and teahouse: a restaurant where tea and light meals are available

Other synonyms of teashop include tea parlor, tea parlour, tearoom.

teashop (noun)	teahouse (noun)
a restaurant where tea and light meals are available	a restaurant where tea and light meals are available