give-up the ghost vs break down

give-up the ghost and break down both are verbs.

Word	Noun	Adjective	Verb	Adverb
give-up the ghost	No	No	Yes	No
break down	No	No	Yes	No

give-up the ghost (verb)	break down (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	collapse due to fatigue, an illness, or a sudden attack
	stop operating or functioning
	separate (substances) into constituent elements or parts
	make a mathematical, chemical, or grammatical analysis of; break down into components or essential features
	make ineffective
	cause to fall or collapse
	lose control of one's emotions
	fall apart