The term 'Based on Trust' can be summarized by the word 'Fiducial', which is an 8-letter word. Fiducial is derived from the Latin word 'fiducia' meaning trust or confidence. In legal terms, fiducial refers to a relationship of trust between two parties, where one party places trust in the other to act in their best interests. This trust is often used in business transactions, such as when a company entrusts another company with its financial assets. In this context, fiducial is used to describe the relationship between the two parties and the trust that exists between them.