tobacconist vs storekeeper

tobacconist and storekeeper both are nouns.

Word	Noun	Adjective	Verb	Adverb
tobacconist	Yes	No	No	No
storekeeper	Yes	No	No	No

As nouns, storekeeper is a hypernym of tobacconist; that is, storekeeper is a word with a broader meaning than tobacconist:

Other hypernyms of tobacconist include market keeper, shopkeeper, tradesman.

tobacconist (noun)	storekeeper (noun)
a shop that sells pipes and pipe tobacco and cigars and cigarettes	a merchant who owns or manages a shop
a retail dealer in tobacco and tobacco-related articles