Any condition, circumstance, opportunity or means, particularly favorable to success, or to any desired end.

“The enemy had the advantage of a more elevated position.”

Superiority; mastery; — used with of to specify its nature or with over to specify the other party.

Superiority of state, or that which gives it; benefit; gain; profit

“Having the faster car is of little advantage.”

To provide (someone) with an advantage, to give an edge to

To do something for one's own benefit; to take advantage of