fall over vs break down

fall over and break down both are verbs.

Word	Noun	Adjective	Verb	Adverb
fall over	No	No	Yes	No
break down	No	No	Yes	No

As verbs, break down is a hypernym of fall over; that is, break down is a word with a broader meaning than fall over:

Other hypernyms of fall over include collapse.

fall over (verb)	break down (verb)
fall forward and down	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