plural vs relation

plural and relation both are nouns.

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

plural (noun)	relation (noun)
the form of a word that is used to denote more than one	an abstraction belonging to or characteristic of two entities or parts together
	(usually plural) mutual dealings or connections among persons or groups
	sexual activity between individuals, especially the insertion of a man's penis into a woman's vagina until orgasm and ejaculation occur
	(law) the principle that an act done at a later time is deemed by law to have occurred at an earlier time
	an act of narration
	a person related by blood or marriage

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