I would think that the term would be "rituals" or "mating rituals".
The term that describes the behaviors between males and females of the same species for the purposes of mating is "courtship". Most animals have a courtship ritual, such as dancing, touching or showing how beautiful they are.
Her primary purpose is to entertain the reader.
The purpose of a plunge bra is to maximize cleavage by having pads and inserts in the bra. They are typically used by females with smaller cup sizes or females that want a low cut look.
Guaranteeing fair business practices for everyone best describes the purpose of the National Industrial Recovery Act.
I would think that the term would be "rituals" or "mating rituals".
Health
The purpose of the gift-giving in the author's description was to show appreciation and strengthen relationships between the characters. It was a gesture of kindness and a way to express gratitude and love.
Roosevelt's purpose is to make it clear that Americans are in a state of war. Stalin's purpose is to rally the Soviets to defeat the Germans.
script (A+)
mission statement
All above
to seek new facts.