Difference between Sub and Hoagy

Sub

Part of speech: noun

Definition: A submarine. A submarine sandwich—a sandwich made on a long bun. A substitute. A substitute in a football (soccer) game: someone who comes on in place of another player part way through the game. Short for subscription: a payment made for membership of a club, etc. A submissive in BDSM practices.

Part of speech: preposition

Definition: Under.

Part of speech: verb

Definition: To substitute for. To work as a substitute teacher, especially in primary and secondary education. To replace (a player) with a substitute. Less commonly, and often as sub on, to bring on (a player) as a substitute. To perform the work of a subeditor or copy editor; to subedit.

Hoagy

Part of speech: noun

Definition: A sandwich made on a long bun; submarine sandwich.