landlubber vs habitant

landlubber and habitant both are nouns.

Word	Noun	Adjective	Verb	Adverb
landlubber	Yes	No	No	No
habitant	Yes	No	No	No

As nouns, habitant is a hypernym of landlubber; that is, habitant is a word with a broader meaning than landlubber:

Other hypernyms of landlubber include denizen, dweller, indweller, inhabitant.

landlubber (noun)	habitant (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