wanderer vs roamer

wanderer and roamer both are nouns.

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

As nouns, wanderer and roamer are synonyms defined as:

Other synonyms of wanderer include bird of passage, rover.

wanderer (noun)	roamer (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	someone who leads a wandering unsettled life
someone who leads a wandering unsettled life