| # | Concept | Culture | Statement | Freq. |
|---|---|---|---|---|
| 1 | football helmet | United States | Common protective gear worn by American football players to prevent head injuries during the game. | 1 |
| 2 | football helmet | United States | Essential safety equipment for American football players at all levels of the sport. | 1 |
| 3 | football helmet | United States | Worn as essential protective equipment in American football games to prevent head injuries. | 1 |
| 4 | football helmet | United States | Essential protective gear for American football players to reduce head injuries and concussions. | 1 |
| 5 | football helmet | United States | Essential protective gear for American football players | 1 |