landsman vs inhabitant

landsman and inhabitant both are nouns.

Word	Noun	Adjective	Verb	Adverb
landsman	Yes	No	No	No
inhabitant	Yes	No	No	No

As nouns, inhabitant is a hypernym of landsman; that is, inhabitant is a word with a broader meaning than landsman:

Other hypernyms of landsman include denizen, dweller, habitant, indweller.

landsman (noun)	inhabitant (noun)
an inexperienced sailor; a sailor on the first voyage	a person who inhabits a particular place
a person who lives and works on land