preposition. The former is more common in American English, the latter in British English. But both are proper: "Both words are commonly used in the U.S." (M-W)

In the direction of; to.

With direction to, in a moral sense; with respect or reference to; regarding; concerning.

Tending to; in the direction of; in behalf of.

Near; about; approaching to.

Near; at hand; in state of preparation.

See Toward.