break down vs go over

break down and go over both are verbs.

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

As verbs, go over is a hyponym of break down; that is, go over is a word with a more specific, narrower meaning than break down:

Other hyponyms of break down include drop like flies, fall over.

break down (verb)	go over (verb)
collapse due to fatigue, an illness, or a sudden attack	fall forward and down
stop operating or functioning	happen in a particular manner
separate (substances) into constituent elements or parts	hold a review (of troops)
make a mathematical, chemical, or grammatical analysis of; break down into components or essential features	examine so as to determine accuracy, quality, or condition
make ineffective
cause to fall or collapse
lose control of one's emotions
fall apart