Why is the film grease so called?

The film "Grease" is so-called because it is set in the 1950s, a time when greaser subculture was prominent in the United States. Greasers were typically working-class teenagers who adopted a particular style of dress and behavior, characterized by slicked-back hair, leather jackets, and a rebellious attitude.

The term "grease" itself is a slang word used to refer to this style and attitude, and it likely originated from the use of grease or pomade to slick back the hair. The film "Grease" captures the essence of this subculture and celebrates its unique style, music, and spirit.