plantation vs acres

plantation and acres both are nouns.

Word	Noun	Adjective	Verb	Adverb
plantation	Yes	No	No	No
acres	Yes	No	No	No

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

plantation: an estate where cash crops are grown on a large scale (especially in tropical areas)
acres: extensive landed property (especially in the country) retained by the owner for his own use

Other hypernyms of plantation include demesne, estate, land, landed estate.

plantation (noun)	acres (noun)
garden consisting of a small cultivated wood without undergrowth	extensive landed property (especially in the country) retained by the owner for his own use
an estate where cash crops are grown on a large scale (especially in tropical areas)