break out vs start

break out is not a noun while start is a noun.

Word	Noun	Adjective	Verb	Adverb
break out	No	No	Yes	No
start	Yes	No	Yes	No

As verbs, start is a hypernym of break out; that is, start is a word with a broader meaning than break out:

Other hypernyms of break out include begin.

As verbs, start is a hypernym of break out; that is, start is a word with a broader meaning than break out:

Other hypernyms of break out include begin.

break out (noun)	start (noun)
	the act of starting something
	a sudden involuntary movement
	a turn to be a starter (in a game at the beginning)
	the advantage gained by beginning early (as in a race)
	a signal to begin (as in a race)
	the beginning of anything
	a line indicating the location of the start of a race or a game
	the time at which something is supposed to begin

break out (verb)	start (verb)
become raw or open	take the first step or steps in carrying out an action
begin suddenly and sometimes violently	set in motion, cause to start
start abruptly	play in the starting lineup
take from stowage in preparation for use	bring into being
move away or escape suddenly	get off the ground
	begin or set in motion
	get going or set in motion
	depart for someplace
	bulge outward
	move or jump suddenly, as if in surprise or alarm
	begin work or acting in a certain capacity, office or job
	begin an event that is implied and limited by the nature or inherent function of the direct object
	have a beginning, in a temporal, spatial, or evaluative sense
	have a beginning characterized in some specified way