a perk
a reward
a gift
a favour (UK)/a favor (US)
a tip
hospitality
a bribe
influence
a small sum of money given to someone for their services
something given or received for doing something good
the ability to obtain favourable treatment from someone
friendly and generous treatment and entertainment of guests
something given or offered in return for some, often dishonest, help
a benefit received as part of the arrangements with your employer
a helpful act
something given willingly without payment