Scrum has 3 different meanings across 2 categories:
Noun · Proper Noun
(rugby) the method of beginning play in which the forwards of each team crouch side by side with locked arms; play starts when the ball is thrown in between them and the two sides compete for possession
A tightly-packed and disorderly crowd of people.
An iterative and incremental agile software development method for managing software projects and product or application development.