Perquisite
Part of speech: noun
Definition: Any monetary or other incidental benefit beyond salary. A gratuity. A privilege or possession held or claimed exclusively by a certain person, group or class.
Perk
Part of speech: noun
Definition: see: perquisite
Part of speech: verb
Definition: To become more lively or enthusiastic.Shortened form of percolate.
Example sentence: I enjoy doing new tunes. It gives me a little bit to perk up, to pay a little bit more attention.