arboretum vs installation

arboretum and installation both are nouns.

Word	Noun	Adjective	Verb	Adverb
arboretum	Yes	No	No	No
installation	Yes	No	No	No

As nouns, installation is a hypernym of arboretum; that is, installation is a word with a broader meaning than arboretum:

arboretum: a facility where trees and shrubs are cultivated for exhibition
installation: a building or place that provides a particular service or is used for a particular industry

Other hypernyms of arboretum include facility.

arboretum (noun)	installation (noun)
a facility where trees and shrubs are cultivated for exhibition	the act of installing something (as equipment)
	a building or place that provides a particular service or is used for a particular industry
	a formal entry into an organization or position or office