mock vs roast

mock and roast both are nouns.

Word	Noun	Adjective	Verb	Adverb
mock	Yes	Yes	Yes	No
roast	Yes	Yes	Yes	No

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

mock (noun)	roast (noun)
the act of mocking or ridiculing	negative criticism
	a piece of meat roasted or for roasting and of a size for slicing into more than one portion

mock (adjective)	roast (adjective)
constituting a copy or imitation of something	(meat) cooked by dry heat in an oven

mock (verb)	roast (verb)
treat with contempt	cook with dry heat, usually in an oven
imitate with mockery and derision	subject to laughter or ridicule