Correction - What is the difference between ... and ... ?

If you mean 'to enter illegally and by force', 'break in' is not followed by the place while 'break into' is. Somebody broke into MY HOUSE and took my TV. My laptop was stolen. I left it in my car and someone broke in.

break in - to train or adapt for a purpose. - to loosen or soften with use. E.g: break in new shoes. - to enter premises forcibly or illegally. E.g: A prowler who was trying to break in. - to begin an activity or undertaking. E.g: The Senator broke in during the war years. break into - to interrupt. E.g: No one would have dared to break into his abstraction - to begin suddenly. E.g: The horse broke into a wild gallop. The child broke into a flood of tears. - to enter (a field of activity) E.g: broke into broadcast journalism at an early age. Hope this helps :D

Break in its a noun. -to enter(a house etc,) by force or unexpectedly. Break into its to interrupt someones conversation. :) I hope it will help.