buy the farm vs succumb

buy the farm and succumb both are verbs.

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

As verbs, succumb is a hyponym of buy the farm; that is, succumb is a word with a more specific, narrower meaning than buy the farm:

buy the farm: pass from physical life and lose all bodily attributes and functions necessary to sustain life
succumb: be fatally overwhelmed

Other hyponyms of buy the farm include abort, asphyxiate, stifle, suffocate, buy it, pip out, drown, predecease, famish, starve, fall, yield.

buy the farm (verb)	succumb (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	consent reluctantly
	be fatally overwhelmed