compel vs postulate

compel is not a noun while postulate is a noun.

Word	Noun	Adjective	Verb	Adverb
compel	No	No	Yes	No
postulate	Yes	No	Yes	No

As verbs, postulate is a hypernym of compel; that is, postulate is a word with a broader meaning than compel:

Other hypernyms of compel include ask, call for, demand, involve, necessitate, need, require, take.

compel (noun)	postulate (noun)
	(logic) a proposition that is accepted as true in order to provide a basis for logical reasoning

compel (verb)	postulate (verb)
force somebody to do something	take as a given; assume as a postulate or axiom
necessitate or exact	maintain or assert
	require as useful, just, or proper