inferior vs cheap

inferior is a noun but cheap is not a noun.

Word	Noun	Adjective	Verb	Adverb
inferior	Yes	Yes	No	No
cheap	No	Yes	No	No

inferior (noun)	cheap (noun)
a character or symbol set or printed or written beneath or slightly below and to the side of another character
one of lesser rank or station or quality

inferior (adjective)	cheap (adjective)
written or printed below and to one side of another character	relatively low in price or charging low prices
of or characteristic of low rank or importance	of very poor quality; flimsy
of low or inferior quality	embarrassingly stingy
having an orbit between the sun and the Earth's orbit	tastelessly showy
lower than a given reference point
falling short of some prescribed norm