enrich vs throttle

enrich is not a noun while throttle is a noun.

Word	Noun	Adjective	Verb	Adverb
enrich	No	No	Yes	No
throttle	Yes	No	Yes	No

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

Other hyponyms of enrich include fill out, round out, choke, feed, fertilise, fertilize.

enrich (noun)	throttle (noun)
	a valve that regulates the supply of fuel to the engine
	a pedal that controls the throttle valve

enrich (verb)	throttle (verb)
make better or improve in quality	reduce the air supply
make wealthy or richer	place limits on (extent or amount or access)
	kill by squeezing the throat of so as to cut off the air