installation vs ceremony

installation and ceremony both are nouns.

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

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

Other hypernyms of installation include ceremonial, ceremonial occasion, observance.

installation (noun)	ceremony (noun)
the act of installing something (as equipment)	the proper or conventional behavior on some solemn occasion
a building or place that provides a particular service or is used for a particular industry	any activity that is performed in an especially solemn elaborate or formal way
a formal entry into an organization or position or office	a formal event performed on a special occasion