In English English we have certain words which never seem to be used in the US, plus the accenting of the particular words can make it polite or impolite e.g. bollocks (testicles for the US catters)

'Bollocks' said mildy to oneself, one has made a slight faux pas
'Bollocks' said heavily to oneself, one has made a slightly larger foxes pass
'Bolllllocks', lengthened delivery to oneself, it has happened again
'Bollocks' short delivery, sir you are in error
'BOLLOCKS' shouted, sir I disagree with you strongly
'Bollocks' muttered under the breath, my dear wife I cannot agree but nor can I say so loudly
'Boll -pause-OCKS!' you are speaking rubbish

We also have lots of other Anglo-Saxon words which never seem to have taken root in the US.

'Taking the piss'
'W****r' Clue, rhymes with 'oil tanker' (seagull rhyming slang)