travel-n; 2 Senses

Sense Number 1: a journey or trip

Commentary: TRAVEL[+event][+journey]
NOTE: focus is on destination, rather than mode of transportation

Bob's job as a sales representative involves a lot of travel.
We enjoyed hearing about Mary's travels through southeast asia.
She works in the travel industry.
The spacecraft's travel to the moon took six days.

PropBank: travel.01
WordNet 3.0 Sense Numbers: 1

Sense Number 2: a means or manner of transportation

Commentary: TRAVEL[+manner][+means][+of_transportation]
NOTE: focus is on how something moves, rather than a destination

In the 18th century, travel by water was often easier and safer than travel by road.
Many science fiction stories explore the concept of time travel.
We are finding air travel increasingly stressful.
The missile has sophisticated electronics on board to guide it's travel over the terrain.

PropBank: travel.01
WordNet 3.0 Sense Numbers: 2, 3