manager, manger

Manager or manager means the person in charge of something, or a supervisor of staff--
Make sure you tell the manager if you are going to be late.
He is hoping to be promoted to manager.
Manager is also an old-fashioned term for taking care of a household and its expenses--
The grandmother was a good manager, even though there was little money.

Manger or manger  ( rhymes with stranger ) is a place to put hay or feed for cattle or other livestock--
"She wrapped him in swaddling clothes and put him in a manger."
They always put up lights and a manger scene at Christmas.
He put hay in the manger for the cow.

Now that you know that, you can say--
The manager says we're going to have a before-Christmas sale on manger scenes."

Note-- "mangier" ( main gee err ) means more mangy, or having more of the disease "mange"--
We used some medicine on the cat, but he is even mangier than before.