B1
why you do something or why something exists
Dictionary examples:
The purpose of my cat's existence is to judge my life choices. (0.0)
My alarm clock's purpose is to interrupt my best dreams. (0.0)
The purpose of my diet is to make donuts taste better. (0.0)
The school's new lab will be used for research purposes only. (27.9)
The primary purpose of the meeting is to discuss the future of the company. (35.7)
a multi-purpose kitchen knife (43.0)