advantage

(noun) the quality of having a superior or more favorable position. Synonyms: vantage. Example: "The experience gave him the advantage over me."

(noun) (tennis) first point scored after deuce.

(noun) benefit resulting from some event or action. Synonyms: reward. Examples: "It turned out to my advantage." "Reaping the rewards of generosity."

(verb) give an advantage to. Example: "This system advantages the rich."