plantation owner vs husbandman

plantation owner and husbandman both are nouns.

Word	Noun	Adjective	Verb	Adverb
plantation owner	Yes	No	No	No
husbandman	Yes	No	No	No

As nouns, husbandman is a hypernym of plantation owner; that is, husbandman is a word with a broader meaning than plantation owner:

Other hypernyms of plantation owner include farmer, granger, sodbuster.

plantation owner (noun)	husbandman (noun)
the owner or manager of a plantation	a person who operates a farm