landsman vs landlubber

landsman and landlubber both are nouns.

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

As nouns, landsman and landlubber are synonyms defined as:

landsman and landlubber: an inexperienced sailor; a sailor on the first voyage

Other synonyms of landsman include lubber.

As nouns, landsman and landlubber are synonyms defined as:

Other synonyms of landsman include landman.

landsman (noun)	landlubber (noun)
an inexperienced sailor; a sailor on the first voyage	an inexperienced sailor; a sailor on the first voyage
a person who lives and works on land	a person who lives and works on land