reward-n; 4 Senses

Sense Number 1: payment or compensation in return for service

Commentary: REWARD[+quantity][+payment][+remuneration/+offer]
NOTE: implies the payment is always given for work completed.

The salesman received a $50,000 bonus as his reward for exceeding his annual target.
Another reward of this company is six weeks of paid vacation.

WordNet 3.0 Sense Numbers: 1, 2

Sense Number 2: a reinforcement stimulus to guide behavior

Commentary: REWARD[+action][+response][+reinforcement]

The rats receive a reward of a food pellet each time they strike the bar.
His reward for making such an impudent remark was a slap on the cheek.

WordNet 3.0 Sense Numbers: 3

Sense Number 3: an offer for delivering or returning something

Commentary: REWARD[+quantity][+payment][+offer/+remuneration]
NOTE: does not imply the payment is always given, different from sense 1

There is a $100,000 reward on his head, dead or alive.
She is offering a reward for the return of her diamond ring.

WordNet 3.0 Sense Numbers: 4

Sense Number 4: a benefit or advantage gained

Commentary: REWARD[+state][+benefit]
NOTE: value or benefit broadly defined, not just financial

Mary is enjoying the rewards of motherhood.
He has decided to pursue the greater risks and rewards of being an entrepreneur.
Pete finds no reward in playing one-upmanship at work.

WordNet 3.0 Sense Numbers: 5