installment vs series

installment and series both are nouns.

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

installment (noun)	series (noun)
the act of installing something (as equipment)	(mathematics) the sum of a finite or infinite sequence of expressions
a part of a broadcast serial	a periodical that appears at scheduled times
a part of a published serial	a serialized set of programs
a payment of part of a debt; usually paid at regular intervals	(sports) several contests played successively by the same teams
	similar things placed in order or happening one after another
	a group of postage stamps having a common theme or a group of coins or currency selected as a group for study or collection
	(electronics) connection of components in such a manner that current flows first through one and then through the other