The notched lapel (American English), step lapel or step collar (British English) is sewn to the collar at an angle, creating a step effect.
The peaked lapel (American English), peak lapel, double breasted style lapel or pointed lapel (British English), is the most formal, featuring on double-breasted jackets,[REF] all formal coats such as a tailcoat[REF] or morning coat, and also commonly with a tuxedo (both single and double breasted).