drifter vs hobo

drifter and hobo both are nouns.

Word	Noun	Adjective	Verb	Adverb
drifter	Yes	No	No	No
hobo	Yes	No	No	No

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

drifter: a wanderer who has no established residence or visible means of support
hobo: a vagrant

Other hyponyms of drifter include beachcomber, sundowner, bum, tramp.

drifter (noun)	hobo (noun)
a wanderer who has no established residence or visible means of support	a vagrant
	a worker who moves around and works temporarily in different places