pet shop vs store

pet shop and store both are nouns.

Word	Noun	Adjective	Verb	Adverb
pet shop	Yes	No	No	No
store	Yes	No	Yes	No

As nouns, store is a hypernym of pet shop; that is, store is a word with a broader meaning than pet shop:

Other hypernyms of pet shop include shop.

pet shop (noun)	store (noun)
a shop where pet animals can be purchased	a mercantile establishment for the retail sale of goods or services
	a depository for goods
	an electronic memory device
	a supply of something available for future use

pet shop (verb)	store (verb)
	keep or lay aside for future use
	find a place for and put away for storage