bang up vs knock up

bang up and knock up both are verbs.

Word	Noun	Adjective	Verb	Adverb
bang up	No	No	Yes	No
knock up	No	No	Yes	No

As verbs, bang up and knock up are synonyms defined as:

Other synonyms of bang up include impregnate, prang up.

bang up (verb)	knock up (verb)
make pregnant	make pregnant
damage or destroy as if by violence