TRAVEL AND MOVEMENT

4. an act of falling or sliding
5. to move slowly, especially as a result of outside forces, with no control over direction
9. too blocked or crowded and causing difficulties
11. to get out of a vehicle, especially a train or bus
13. to hit against something or someone, esp. by accident
14. unable to leave somewhere because of a problem such as not having any transport or money
16. to move up or climb something
17. someone who travels by getting free rides in someone else's vehicle
18. a person who enjoys long walks in the countryside
19. unpleasent smell

1. to get onto or allow people to get onto a boat, train, or aircraft
2. (especially of moving objects) to hit something violently
3. (on an aircraft, ship, or train) someone who helps and serves passengers
6. a person who is walking, especially in an area where vehicles go
7. (especially of a vehicle) to slide along a surface so that you have no control
8. someone who regularly travels between work and home
10. not moving or not changing
12. a large group of people
15. to get off a horse, bicycle, or motorcycle
16. (boat or ship) unable to move because it is touching ground or in a place where there is very little water