corinthian vs Corinthian order

corinthian is not a noun while Corinthian order is a noun.

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

corinthian (noun)	Corinthian order (noun)
	the last Greek order; similar to the Ionic order except the capital is decorated with carvings of acanthus leaves

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