The green pieces of paper folded up in your pocket, the balance in your checking account, your mortgage, and that time you paid for dinner with your friend and she said that the next time is on her. These are all forms of money.
That feels awkward, and Microsoft Word isn't too happy with it either. It's some fragments strewn together - but seems out of place. What's the proper way (or a better way) to handle this for a work of non-fiction?