get down vs break in

get down and break in both are verbs.

Word	Noun	Adjective	Verb	Adverb
get down	No	No	Yes	No
break in	No	No	Yes	No

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

get down (verb)	break in (verb)
take the first step or steps in carrying out an action	make submissive, obedient, or useful
put down in writing; of texts, musical compositions, etc.	break so as to fall inward
pass through the esophagus as part of eating or drinking	start in a certain activity, enterprise, or role
lower someone's spirits; make downhearted	break into a conversation
move something or somebody to a lower position	intrude on uninvited
alight from (a horse)	enter someone's (virtual or real) property in an unauthorized manner, usually with the intent to steal or commit a violent act
lower (one's body) as by kneeling