pull the plug vs quit

pull the plug and quit both are verbs.

Word	Noun	Adjective	Verb	Adverb
pull the plug	No	No	Yes	No
quit	No	No	Yes	No

As verbs, quit is a hypernym of pull the plug; that is, quit is a word with a broader meaning than pull the plug:

Other hypernyms of pull the plug include cease, discontinue, give up, lay off, stop.

pull the plug (verb)	quit (verb)
prevent from happening or continuing	give up in the face of defeat of lacking hope; admit defeat
	go away or leave
	turn away from; give up
	give up or retire from a position
	put an end to a state or an activity