vary vs chequer

vary is not a noun while chequer is a noun.

Word	Noun	Adjective	Verb	Adverb
vary	No	No	Yes	No
chequer	Yes	No	Yes	No

As verbs, chequer is a hyponym of vary; that is, chequer is a word with a more specific, narrower meaning than vary:

Other hyponyms of vary include checker.

vary (noun)	chequer (noun)
	one of the flat round pieces used in playing the game of checkers

vary (verb)	chequer (verb)
become different in some particular way, without permanently losing one's or its former characteristics or essence	variegate with different colors, shades, or patterns
make something more diverse and varied	mark into squares or draw squares on; draw crossed lines on
be at variance with; be out of line with
be subject to change in accordance with a variable