fungible

"At the school fair, Maria exchanged her drawing for a bag of cookies. "

"My friend told me there was something in the box, but I didn't know what it was yet. "

"A new water bottle is a replaceable item for a student. "

"The school's chief concern, chiefly its declining enrollment, was discussed at the meeting. "

"I went to the park because the weather was nice. "

"Consider that we’ve had three major events and the year has hardly begun."

"The utility of a good textbook is that it helps students learn the subject matter. "

"The plural of "cat" is "cats." "

"I had no shallots so I substituted onion."

"I say I did him a service by ending our relationship – now he can freely pursue his career."

"In this toolbox, all the screwdrivers are interchangeables, meaning any one can be used in place of another. "

"All in all, it was an even exchange."