installment vs install

installment is a noun but install is not a noun.

Word	Noun	Adjective	Verb	Adverb
installment	Yes	No	No	No
install	No	No	Yes	No

installment (noun)	install (noun)
the act of installing something (as equipment)
a part of a broadcast serial
a part of a published serial
a payment of part of a debt; usually paid at regular intervals

installment (verb)	install (verb)
	set up for use
	place
	put into an office or a position