What two-word term, common in Britain, means a tuxedo?

What two-word term is used for a hired underworld assassin? Which two-word term describes a little-known long-shot candidate who wins a nomination, as James K. Polk did in 1844? What two-word term describes a small gift tucked into a Christmas stocking? What two-word term names the soft, fluffy pad used to dab makeup onto the face? What two-word term describes an audition that's open to everyone? What two-word term describes an enlisted soldier of the lowest rank? What two-word term describes large animals hunted for sport? What two-word term describes someone who gives a kidney or part of a lung for transplant?