information:extraction, structural:expansion, information:filtering, quality:corruption
Uniform Commercial Code

A term in a purported acceptance is different if it directly contradicts the subject matter of a term present in the original offer. A term in a purported acceptance is additional if it contemplates a subject matter not present at all in the original offer. As already mentioned, subsection 2 does tell what to do with additional terms. They do not become part of the contract if either party is not a merchant.