conservatory vs indoor garden

conservatory and indoor garden both are nouns.

Word	Noun	Adjective	Verb	Adverb
conservatory	Yes	No	No	No
indoor garden	Yes	No	No	No

As nouns, conservatory and indoor garden are synonyms defined as:

conservatory and indoor garden: a greenhouse in which plants are arranged in a pleasing manner

Other synonyms of conservatory include hothouse.

conservatory (noun)	indoor garden (noun)
a greenhouse in which plants are arranged in a pleasing manner	a greenhouse in which plants are arranged in a pleasing manner
a schoolhouse with special facilities for fine arts
the faculty and students of a school specializing in one of the fine arts