The act of participating in an exchange of goods and services for monetary compensation. An agent trades an object, product or service with a participant in exchange for a one time or periodic payment. | Action | actionStatus, additionalType, agent, alternateName, description, disambiguatingDescription, endTime, error, identifier, image, instrument, location, mainEntityOfPage, name, object, participant, potentialAction, price, priceCurrency, priceSpecification, result, sameAs, startTime, subjectOf, target, url | BuyAction, DonateAction, OrderAction, PayAction, PreOrderAction, QuoteAction, RentAction, SellAction, TipAction |