Hierarchy classification:

1. top of the aat hierarchies
2. Activities Facet
3. Physical and Mental Activities (hierarchy name)
4. physical activities
5. [physical activities by specific context]
6. [public and interactive activities]
7. games
8. sports
9. field sports

Additional parents:

1. top of the aat hierarchies
2. Activities Facet
3. Physical and Mental Activities
4. physical activities
5. physical activities by specific context
6. public and interactive activities
7. games
8. ball games

Anotations

Scope note:

Sport played with two teams of 11 players on an oblong ball on a rectangular field marked by vertical yard lines called a "gridiron." It evolved from English rugby and soccer (association football); it differs from soccer chiefly in allowing players to touch, throw, and carry the ball with their hands, and it differs from rugby in allowing each side to control the ball in alternating possessions. The sport originated in the United States.