break down vs lose it

break down and lose it both are verbs.

Word	Noun	Adjective	Verb	Adverb
break down	No	No	Yes	No
lose it	No	No	Yes	No

As verbs, break down and lose it are synonyms defined as:

Other synonyms of break down include snap.

break down (verb)	lose it (verb)
collapse due to fatigue, an illness, or a sudden attack	lose control of one's emotions
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