buy the farm vs exit

buy the farm is not a noun while exit is a noun.

Word	Noun	Adjective	Verb	Adverb
buy the farm	No	No	Yes	No
exit	Yes	No	Yes	No

As verbs, buy the farm and exit are synonyms defined as:

buy the farm and exit: pass from physical life and lose all bodily attributes and functions necessary to sustain life

buy the farm (noun)	exit (noun)
	the act of going out
	an opening that permits escape or release
	euphemistic expressions for death

buy the farm (verb)	exit (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	pass from physical life and lose all bodily attributes and functions necessary to sustain life
	lose the lead
	move out of or depart from