advertisement /əd-vûrˈtis-mənt or -tiz-/ or (esp US) advertizement /-tiz- or -tīzˈ/ noun

1. The act of advertising
2. A public notice, usu with the purpose of informing and/or changing public attitudes and behaviour (informal short form ad or adˈvert)
3. A short performance recorded for radio, TV, etc to advertise goods or services (informal short form ad or adˈvert)
4. News (obsolete)

advertiser /adˈ or -tīzˈ/ noun

1. Someone who advertises
2. Often part of a newspaper's title

adˈvertīsing noun

The business of producing advertisements

Attentive

adˈland noun (facetious)

1. The imaginary and usu idealized world portrayed in advertisements
2. The advertising industry

ad-man or adman /adˈman/ noun

Someone who takes part in advertising, esp advertising addressed to the ad-mass

adˈ-mass or adˈmass noun

1. Advertising intended to appeal to a mass public
2. The mass aimed at by such advertising

advertising agency noun

An organization which helps a company to sell its products or services by undertaking market research, creating advertising material, and buying space in newspapers, TV schedules, etc

Advertising Standards Authority

An independent group established in the UK in 1962 to ensure that the self-regulating system of advertising works effectively in the public interest (abbrev ASA)