small stores vs commissary

small stores and commissary both are nouns.

Word	Noun	Adjective	Verb	Adverb
small stores	Yes	No	No	No
commissary	Yes	No	No	No

As nouns, commissary is a hypernym of small stores; that is, commissary is a word with a broader meaning than small stores:

small stores: personal items conforming to regulations that are sold aboard ship or at a naval base and charged to the person's pay
commissary: a retail store that sells equipment and provisions (usually to military personnel)

small stores (noun)	commissary (noun)
personal items conforming to regulations that are sold aboard ship or at a naval base and charged to the person's pay	a retail store that sells equipment and provisions (usually to military personnel)
	a snack bar in a film studio