decide vs regulate

decide and regulate both are verbs.

Word	Noun	Adjective	Verb	Adverb
decide	No	No	Yes	No
regulate	No	No	Yes	No

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

decide: reach, make, or come to a decision about something
regulate: bring into conformity with rules or principles or usage; impose regulations

As verbs, regulate is a hypernym of decide; that is, regulate is a word with a broader meaning than decide:

Other hypernyms of decide include determine, influence, mold, mould, shape.

decide (verb)	regulate (verb)
reach, make, or come to a decision about something	fix or adjust the time, amount, degree, or rate of
bring to an end; settle conclusively	restrain the emission of (sound, fluid, etc.)
cause to decide	shape or influence; give direction to
influence or determine	bring into conformity with rules or principles or usage; impose regulations