Many writers misuse clean up and cleanup. Time to sweep away those errors!

Cleanup is a noun that means making something clean. Metaphorically, it also is used to indicate that someone has made a lot of money or that a complete job was done. For example: After the party, only a few of the so-called volunteers actually helped with the cleanup.

Clean up is a verb that shows someone in the act of cleaning. By extension, it also can be used to show that someone is making a lot of money. For example: I volunteered to clean up the hall after the big bash.

Now that you know the difference, you writing should be all spick–and–span from here on out!