break-in vs housebreaking

break-in and housebreaking both are nouns.

Word	Noun	Adjective	Verb	Adverb
break-in	Yes	No	No	No
housebreaking	Yes	No	No	No

As nouns, break-in and housebreaking are synonyms defined as:

break-in and housebreaking: trespassing for an unlawful purpose; illegal entrance into premises with criminal intent

Other synonyms of break-in include breaking and entering.

break-in (noun)	housebreaking (noun)
trespassing for an unlawful purpose; illegal entrance into premises with criminal intent	trespassing for an unlawful purpose; illegal entrance into premises with criminal intent