home, hone

Home or home means place of residence or origin, or the house one lives in--
Go home!
Is New York City your home?
Our team is playing a home game today, and we are going to see it.
Is anyone home?
Are they at home?

Hone or hone means to sharpen, literally or figuratively--
He uses a grinding stone to hone the edge of his tools.
He hopes that playing this game will help to hone his wits.
Hone also means the stone used to sharpen a razor or blade--
He is looking for the hone he uses to sharpen his razor.
Hone also means a tool used to enlarge the dimensions of a hole to a desired size--
After you drill the hole, use the hone to enlarge it to 1/2" in diameter.

Now that you know that, you can say--
"When he gets home he will hone that blade for you."

Note--"to home in on" means to get closer and closer to a source, such as the source of a radio broadcast, or to a target for a missile--
It will take several seconds for the missile to home in on the target.