“Let’s make a DEAL.”

[MichaelOttinger]

“Let’s make an AGREEMENT. You wash the dishes, and I’ll dry them.”

“If you clean your room, you can have dessert. Okay? Do we have a DEAL?”

“You’re breaking our ARRANGEMENT!  I lead the horse to water, but now you’re not making him drink!”

In this context, would it be appropriate to use the sign CONTRACT?  I keep finding “AGREE” online; as in “THINK-SAME.”  But that doesn’t feel conceptually accurate.

[Lysandor]

AGREE is not conceptually accurate. I was thinking maybe TRADE. But that's usually used for physical objects.