fulfil vs quench

fulfil and quench both are verbs.

Word	Noun	Adjective	Verb	Adverb
fulfil	No	No	Yes	No
quench	No	No	Yes	No

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

fulfil (verb)	quench (verb)
fill, satisfy or meet a want or need or condition or restriction	suppress or crush completely
put in effect	cool (hot metal) by plunging into cold water or other liquid
meet the requirements or expectations of	reduce the degree of (luminescence or phosphorescence) in (excited molecules or a material) by adding a suitable substance
	satisfy (thirst)
	suppress (sparking) when the current is cut off in an inductive circuit, or suppress (an oscillation or discharge) in a component or device
	put out, as of fires, flames, or lights