glasshouse vs orangery

glasshouse and orangery both are nouns.

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

As nouns, orangery is a hyponym of glasshouse; that is, orangery is a word with a more specific, narrower meaning than glasshouse:

glasshouse: a building with glass walls and roof; for the cultivation and exhibition of plants under controlled conditions
orangery: a place where oranges are grown; a plantation of orange trees in warm climes or a greenhouse in cooler areas

Other hyponyms of glasshouse include conservatory, hothouse, indoor garden.

glasshouse (noun)	orangery (noun)
a building with glass walls and roof; for the cultivation and exhibition of plants under controlled conditions	a place where oranges are grown; a plantation of orange trees in warm climes or a greenhouse in cooler areas