Marketing is the distribution of goods and services ("product") by a "producer" to another producer (B2B) or a "consumer" (B2C).

Advertising information ("advertisement") communicates Q (S), V (D), and site of a good or service to "market participants" (buyers and sellers), ie. those people willing and able to change one good or service into another of value. An advertisement is a public notice.

Synonymous terms (EN) for market exchange between buyers and sellers are trade, business, traffick (antiq.), or commerce. A synonym for an advertisement is a marketing communication. A "public relations" (PR) communication is not an advertisement; such a message is not fit for purpose nor intended to benefit a specific commercial objective.

The media utilized for distributing an advertisement reduce to audio and visual broadcast technology, operated by people, to display product. A specified period for advertising, determined by a seller or seller agent, is known (US-Eng.) as a "campaign". The period terminates at such time seller's funds are exhausted or sales goal is obtained.

The simplest form of marketing an advertisement is word-of-mouth (man is the communication tool). The most complex (to date) is "personalized" digital telecommunication addressed to one buyer's purchase preferences and habits, ie. information collected and transformed into data by one or more sellers.

Diversity is the key to economic and political evolution.