reformulate vs formulate

reformulate and formulate both are verbs.

Word	Noun	Adjective	Verb	Adverb
reformulate	No	No	Yes	No
formulate	No	No	Yes	No

As verbs, formulate is a hypernym of reformulate; that is, formulate is a word with a broader meaning than reformulate:

reformulate: formulate or develop again, of an improved theory or hypothesis
formulate: elaborate, as of theories and hypotheses

Other hypernyms of reformulate include develop, explicate.

reformulate (verb)	formulate (verb)
formulate or develop again, of an improved theory or hypothesis	put into words or an expression
	elaborate, as of theories and hypotheses
	come up with (an idea, plan, explanation, theory, or principle) after a mental effort
	prepare according to a formula