Corinthian vs corinthian

Corinthian is a noun but corinthian is not a noun.

Word	Noun	Adjective	Verb	Adverb
Corinthian	Yes	No	No	No
corinthian	No	Yes	No	No

Corinthian (noun)	corinthian (noun)
a resident of Corinth
a man devoted to the pursuit of pleasure

Corinthian (adjective)	corinthian (adjective)
	of or relating to or characteristic of Corinth or its inhabitants
	of or pertaining to the Corinthian style of architecture