Credence

• In probability theory, credence means a subjective estimate of probability, as in Bayesian probability.
• In economics, a credence good is a good whose value is hard for a consumer to ascertain.
• A letter of credence is a letter sent by one head of state to another formally accrediting a named individual, usually but not always a diplomat.
• A credence table is a small side-table used in the Christian ceremony of the Eucharist.

The word is also associated with:

• Credence Systems Corporation, a manufacturer of automatic test equipment (ATE) for analog, digital, memory, mixed-signal and wireless semiconductor devices.
• Creedence Clearwater Revival, a rock band led by John Fogerty.
• Credence Capital Management, a Hedge Fund management company in New York City.
• Credence, a song written by Opeth on their album My Arms, Your Hearse.