settler vs migrator

settler and migrator both are nouns.

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

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

Other hypernyms of settler include migrant.

settler (noun)	migrator (noun)
a person who settles in a new colony or moves into new country	an animal (especially birds and fish) that travels between different habitats at particular times of the year
a clerk in a betting shop who calculates the winnings	traveler who moves from one region or country to another
a negotiator who settles disputes