break away vs go away

break away and go away both are verbs.

Word	Noun	Adjective	Verb	Adverb
break away	No	No	Yes	No
go away	No	No	Yes	No

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

Other hypernyms of break away include go forth, leave.

break away (verb)	go away (verb)
break off (a piece from a whole)	get lost, as without warning or explanation
flee; take to one's heels; cut and run	go away from a place
move away or escape suddenly	move away from a place into another direction
withdraw from an organization or communion	become invisible or unnoticeable
interrupt a continued activity