wanderer vs drifter

wanderer and drifter both are nouns.

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

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

wanderer: someone who leads a wandering unsettled life
drifter: a wanderer who has no established residence or visible means of support

Other hyponyms of wanderer include nomad, clochard, floater, vagabond, vagrant.

wanderer (noun)	drifter (noun)
a computer program that prowls the internet looking for publicly accessible resources that can be added to a database; the database can then be searched with a search engine	a wanderer who has no established residence or visible means of support
someone who leads a wandering unsettled life