(1) “Action“, in the sense of a judicial proceeding, includes recoupment, counterclaim, set-off, suit in equity, and any other proceeding in which rights are determined.

2)”Aggrieved party” means a party entitled to pursue a remedy.

3) “Agreement“, as distinguished from “contract”, means the bargain of the parties in fact, as found in their language or inferred from other circumstances, including course of performance, course of dealing, or usage of trade as provided in Section 1-303.

…and 40 other Definitions you Should Know by Heart!   Get out your Flash-Cards…   Definitions in UCC to Study (§1-201)