migrant vs immigrant

migrant and immigrant both are nouns.

Word	Noun	Adjective	Verb	Adverb
migrant	Yes	Yes	No	No
immigrant	Yes	No	No	No

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

migrant: traveler who moves from one region or country to another
immigrant: a person who comes to a country where they were not born in order to settle there

Other hyponyms of migrant include departer, goer, leaver, emigrant, emigre, emigree, outgoer, evacuee, rusher, colonist, settler.

migrant (noun)	immigrant (noun)
traveler who moves from one region or country to another	a person who comes to a country where they were not born in order to settle there

migrant (adjective)	immigrant (adjective)
habitually moving from place to place especially in search of seasonal work