The term 'stock-based' is a modern financial compound. The first element, 'stock', has a long journey from its Old English meaning of "tree trunk" or "post," which by the 14th century evolved metaphorically to mean the capital or fund of a merchant, likened to the solid trunk of a tree from which wealth grows. This eventually specialized to mean a share in a company's capital. The second element, 'based', originates from the Greek 'basis', via Latin and French, meaning a foundation. When combined, the compound literally means "having shares as its foundation," logically describing compensation systems where company equity forms the principal component of payment, aligning the recipient's interests with the company's performance.

Structure: stock (financial share) + based (having as a foundation) - stock: From Old English 'stocc' (tree trunk, post, log). In this compound, it functions as a noun meaning a share in the capital of a company. - based: From the past participle of the verb 'base', ultimately from Greek 'basis' (a stepping, step, pedestal). It functions as an adjective-forming suffix meaning "having as a foundation or principal element".