This is called sound alike words!
So the purpose of sound alikes is to show how sound alike words can be so different even though they sound the same.
There are three ways you can play this game:
#1) Use the words the opposite of how they are meant to be used
EXAMPLE: I here you. I think hear is the best place to live! 
#2) Use the words the same as they are meant to be used
EXAMPLE: I see the waves rolling in to the quiet sea.
#3) Ask a question and give the answer
EXAMPLE:
What do you call an illegally parked frog?
Toad (towed)
See how many different ones you can come up with. There are lots in English.
I think it is more fun to use them in sentences if you can think of them. Let's play !
The little girl spilled flour on a flower...
Sign the petition and then post it on the sign post.
Roll you tongue when you are playing your role...
You can do sole searching or you can do soul searching.
He got a pretty fine fine for jaywalking...
You can line your pockets with money or you can tow the line and be honest.
She was a pole in the poll...
Tough tuff...
I was weak from a week of being ill.
"I have had a week back."
"Oh for how long?"
"Oh for about a week back!"
Lauren63 it is okay to groan !