tobacco vs shag

tobacco and shag both are nouns.

Word	Noun	Adjective	Verb	Adverb
tobacco	Yes	No	No	No
shag	Yes	No	Yes	No

As nouns, shag is a hyponym of tobacco; that is, shag is a word with a more specific, narrower meaning than tobacco:

tobacco: leaves of the tobacco plant dried and prepared for smoking or ingestion
shag: a strong coarse tobacco that has been shredded

Other hyponyms of tobacco include filler, roll of tobacco, smoke, smoking mixture, snuff, Turkish tobacco.

tobacco (noun)	shag (noun)
leaves of the tobacco plant dried and prepared for smoking or ingestion	a lively dance step consisting of hopping on each foot in turn
aromatic annual or perennial herbs and shrubs	slang for sexual intercourse
	a fabric with long coarse nap
	a matted tangle of hair or fiber
	a strong coarse tobacco that has been shredded

tobacco (verb)	shag (verb)
	dance the shag