break away vs break loose

break away and break loose both are verbs.

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

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

Other hypernyms of break away include escape, get away.

break away (verb)	break loose (verb)
break off (a piece from a whole)	be unleashed; emerge with violence or noise
flee; take to one's heels; cut and run	run away from confinement
move away or escape suddenly
withdraw from an organization or communion
interrupt a continued activity