topside vs plural

topside and plural both are nouns.

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

topside (noun)	plural (noun)
(usually plural) weather deck; the part of a ship's hull that is above the waterline	the form of a word that is used to denote more than one

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