Nouns

(n)classica creation of the highest excellence
(n)classican artist who has created classic works

Adjectives

(a)classical, classicof or relating to the first significant period of a civilization, culture, area of study, etc.“classic Chinese pottery”, “classical Marxism”
(s)classicof a well-known type; remarkably typical“the classic struggle between good and evil”, “I woke up with all the classic symptoms of the flu”, “she made the classic mistake of choosing style over substance”
(s)classicconsidered of the highest quality and lasting significance or worth“a classic car”, “`War and Peace' is a classic novel”
(s)classical, classicwell-known and long-established in form or style“a classical ballet”, “classic double-breasted suit”, “the classic struggle between good and evil”