1. Words about sports
1.1. Equipments
1.1.1. archery
1.1.1.1. arrow
1.1.1.1.1. bow
1.1.2. swimming
1.1.2.1. goggles
1.1.2.1.1. swimming cap
1.1.3. table tennis
1.1.3.1. table
1.1.3.1.1. racket
1.1.4. football
1.1.4.1. cleats
1.1.4.1.1. trainers
1.1.5. kneepads
1.1.6. boxing gloves
1.2. verbs with sports
1.2.1. go
1.2.1.1. hiking
1.2.1.1.1. swimming
1.2.2. do
1.2.2.1. archery
1.2.2.1.1. yoga
1.2.3. play
1.2.3.1. tennis
1.2.3.1.1. football
1.3. doing sports
1.3.1. exercises
1.3.1.1. training
1.3.1.1.1. win
1.4. sports ending with -ball
1.4.1. basketball
1.4.1.1. football
1.4.1.1.1. volleyball
2. Types of sports
2.1. Indoor sports
2.1.1. fitness
2.1.1.1. yoga
2.1.1.1.1. gymnastics
2.2. Outdoor sports
2.2.1. jogging
2.2.1.1. hiking
2.2.1.1.1. skating
2.3. Team sports
2.3.1. volleyball
2.3.1.1. basketball
2.3.1.1.1. football
2.4. Individual sports
2.4.1. boxing
2.4.1.1. cycling
2.4.1.1.1. swimming
2.5. Winter sports
2.5.1. snowboard
2.5.1.1. ice hockey
2.5.1.1.1. ice skating
2.6. Summer sports
2.6.1. beach volleyball
2.6.1.1. frisbee
2.7. Contact sports
2.7.1. baseball
2.7.1.1. football
2.8. Motor sports
2.8.1. nascar
2.8.1.1. formula 1
2.8.1.1.1. moto GP
2.9. Water sports
2.9.1. rafting
2.9.1.1. scuba diving
2.9.1.1.1. canoeing
2.10. Air sports
2.10.1. bungee jumping
2.10.1.1. skydiving
2.10.1.1.1. hot air balloon