beachcomber vs drifter

beachcomber and drifter both are nouns.

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

As nouns, drifter is a hypernym of beachcomber; that is, drifter is a word with a broader meaning than beachcomber:

beachcomber: a vagrant living on a beach
drifter: a wanderer who has no established residence or visible means of support

Other hypernyms of beachcomber include clochard, floater, vagabond, vagrant.

beachcomber (noun)	drifter (noun)
a vagrant living on a beach	a wanderer who has no established residence or visible means of support