plural vs overtone

plural and overtone both are nouns.

Word	Noun	Adjective	Verb	Adverb
plural	Yes	Yes	No	No
overtone	Yes	No	No	No

plural (noun)	overtone (noun)
the form of a word that is used to denote more than one	a harmonic with a frequency that is a multiple of the fundamental frequency
	(usually plural) an ulterior implicit meaning or quality

plural (adjective)	overtone (adjective)
grammatical number category referring to two or more items or units
composed of more than one member, set, or kind