return vs send in

verb

To throw a ball back to the wicket-keeper (or a fielder at that position) from somewhere in the field.
To elect according to the official report of the election officers.
To recur; to come again.
To come or go back (to a place or person).
To give in requital or recompense; to requite.
To give something back to its original holder or owner.
To report, or bring back and make known.
To go back in thought, narration, or argument.
To place or put back something where it had been.
To bat the ball back over the net in response to a serve.
To play a card as a result of another player's lead.
To pass (data) back to the calling procedure.
To say in reply; to respond.
To take back something to a vendor for a complete or partial refund.
To relinquish control to the calling procedure.

noun

The act of relinquishing control to the calling procedure.
An answer.
A return value: the data passed back from a called procedure.
A return pipe, returning fluid to a boiler or other central plant (compare with flow pipe, which carries liquid away from a central plant).
The act of catching a ball after a punt and running it back towards the opposing team.
A return ticket.
An item that is returned, e.g. due to a defect, or the act of returning it.
An account, or formal report, of an action performed, of a duty discharged, of facts or statistics, etc.; especially, in the plural, a set of tabulated statistics prepared for general information.
The continuation in a different direction, most often at a right angle, of a building, face of a building, or any member, such as a moulding; applied to the shorter in contradistinction to the longer.
Gain or loss from an investment.
A report of income submitted to a government for purposes of specifying exact tax payment amounts; a tax return.
A throw from a fielder to the wicket-keeper or to another fielder at the wicket.
A carriage return character.
The act of returning.
A short perpendicular extension of a desk, usually slightly lower.

verb