left-handed vs illegitimate

left-handed is not a noun while illegitimate is a noun.

Word	Noun	Adjective	Verb	Adverb
left-handed	No	Yes	No	No
illegitimate	Yes	Yes	No	No

left-handed (noun)	illegitimate (noun)
	the illegitimate offspring of unmarried parents

left-handed (adjective)	illegitimate (adjective)
using or intended for the left hand	of marriages and offspring; not recognized as lawful
ironically ambiguous	contrary to or forbidden by law
rotating to the left
lacking physical movement skills, especially with the hands
(of marriages) of a marriage between one of royal or noble birth and one of lower rank; valid but with the understanding that the rank of the inferior remains unchanged and offspring do not succeed to titles or property of the superior
(of marriages) illicit or informal