landlubber vs denizen

landlubber and denizen both are nouns.

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

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

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

landlubber (noun)	denizen (noun)
an inexperienced sailor; a sailor on the first voyage	a plant or animal naturalized in a region
a person who lives and works on land	a person who inhabits a particular place