class vs classy

class is a noun but classy is not a noun.

Word	Noun	Adjective	Verb	Adverb
class	Yes	No	Yes	No
classy	No	Yes	No	No

class (noun)	classy (noun)
education imparted in a series of lessons or meetings
elegance in dress or behavior
a collection of things sharing a common attribute
people having the same social, economic, or educational status
(biology) a taxonomic group containing one or more orders
a body of students who are taught together
a body of students who graduate together
a league ranked by quality

class (adjective)	classy (adjective)
	elegant and fashionable

class (verb)	classy (verb)
arrange or order by classes or categories