series vs maths

series and maths both are nouns.

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

series (noun)	maths (noun)
(mathematics) the sum of a finite or infinite sequence of expressions	a science (or group of related sciences) dealing with the logic of quantity and shape and arrangement
a periodical that appears at scheduled times
a serialized set of programs
(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