When the standard-form agreements used by two businesses contain different or opposing terms for important provisions of their contract together, the ucc section that applies is

Article 2 in case of goods, and Common laws in case its other than goods, and like real estate or services.

Explanation:

Each business deal is developed merely on the preprinted forms, and the conflicting terms can create a challenge as well as uncertainty in the future through a dispute. However, the last question for solving such disputed issues is to find if the goods are involved. If in case, goods are involved its Article 2 of the UCC that comes into play. And if the business deals with something else, and other than goods, like real estate or services then the rules that apply are the common laws.