In the United Kingdom , Ireland , and Canada , the heatless varieties are called `` peppers '' , `` sweet peppers '' or `` capsicums '' ( or `` green peppers , '' `` red peppers , '' etc ) while the hot ones are `` chilli\/chillies '' ( double L ) or `` chilli peppers '' . In the United Kingdom and Ireland , the heatless varieties are called `` bell peppers '' , `` sweet peppers '' or `` peppers '' ( or `` green peppers , '' `` red peppers , '' etc. ) while the hot ones are `` chilli\/chillies '' ( double L ) or `` chilli peppers '' .