police blotter vs rap sheet

police blotter and rap sheet both are nouns.

Word	Noun	Adjective	Verb	Adverb
police blotter	Yes	No	No	No
rap sheet	Yes	No	No	No

As nouns, police blotter and rap sheet are synonyms defined as:

police blotter and rap sheet: the daily written record of events (as arrests) in a police station

Other synonyms of police blotter include blotter, charge sheet, day book.

police blotter (noun)	rap sheet (noun)
the daily written record of events (as arrests) in a police station	the daily written record of events (as arrests) in a police station