orangery vs plantation

orangery and plantation both are nouns.

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

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

orangery: a place where oranges are grown; a plantation of orange trees in warm climes or a greenhouse in cooler areas
plantation: an estate where cash crops are grown on a large scale (especially in tropical areas)

Other hypernyms of orangery include glasshouse, greenhouse.

orangery (noun)	plantation (noun)
a place where oranges are grown; a plantation of orange trees in warm climes or a greenhouse in cooler areas	garden consisting of a small cultivated wood without undergrowth
	an estate where cash crops are grown on a large scale (especially in tropical areas)