tobacco shop vs tobacconist

tobacco shop and tobacconist both are nouns.

Word	Noun	Adjective	Verb	Adverb
tobacco shop	Yes	No	No	No
tobacconist	Yes	No	No	No

As nouns, tobacco shop and tobacconist are synonyms defined as:

tobacco shop and tobacconist: a shop that sells pipes and pipe tobacco and cigars and cigarettes

Other synonyms of tobacco shop include tobacconist shop.

tobacco shop (noun)	tobacconist (noun)
a shop that sells pipes and pipe tobacco and cigars and cigarettes	a shop that sells pipes and pipe tobacco and cigars and cigarettes
	a retail dealer in tobacco and tobacco-related articles