Bad manners and Slip-up

Bad manners noun - Impoliteness resulting from ignorance.

Slip-up and bad manners are semantically related. In some cases you can use "Slip-up" instead a noun phrase "Bad manners".

Slip-up noun - A minor inadvertent mistake usually observed in speech or writing or in small accidents or memory lapses etc..

Bad manners and slip-up are semantically related. Sometimes you can use "Bad manners" instead a noun phrase "Slip-up".