The definition of an institution is an established custom or practice, or a group of people that was formed for a specific reason or a building that houses the group of people. Marriage is an example of a cultural institution.
Contextual targeting is a type of targeting on the Google Display Network in which you select specific keywords or topics and then allow AdWords to identify websites that are a good fit for your keywords and targets.
REACH is the measure of the percentage of people in the target market who are exposed to the ad campaign during a given time period. FREQUENCY is a measure of how many times the average person in the target market is exposed. MEDIA IMPACT- the qualitative value of a message exposure through a given medium.