migrator vs traveler

migrator and traveler both are nouns.

Word	Noun	Adjective	Verb	Adverb
migrator	Yes	No	No	No
traveler	Yes	No	No	No

As nouns, traveler is a hypernym of migrator; that is, traveler is a word with a broader meaning than migrator:

Other hypernyms of migrator include traveller.

migrator (noun)	traveler (noun)
an animal (especially birds and fish) that travels between different habitats at particular times of the year	a person who changes location
traveler who moves from one region or country to another