Target audience is a particular group at which a product such as a film or advertisement is aimed.
Secondary Target Audience
A secondary target audience is simply the second most important consumer segment you'd like to target It's not your primary customer base, and may have less money or fewer demands for your product.
Demographics
Demographics is statistical data relating to the population and particular groups within it. These include things such as, Age, Gender, Ethnicity and Location
Psychographics
Psychographics is the study and classification of people according to their attitudes, aspirations, and other psychological criteria, especially in market research. These include, attitude, health, lifestyle and values