It's always hard to use them, isn't it? OK, let's see if we can do something to clarify the differences.
Travel: go from one place to another by car, bus, plane, ... It's usually a verb.
Peter travelled over 100 miles to see the performance.
Journey: when you travel from one place to another.
Did you have a good journey?
Trip: when you go to a place for a short time and then come back.
How was your trip to London?
Tour: when you visit lots of places in the same city or country.
My neighbours are on a tour of Europe.
Let's have some practice now! Choose the correct word. (Read the first comment to check the answers).
1. The best way to see London is on a bus tour / journey.
2. In this job you need to go on business trips / travels all over Spain.
3. My father has to tour / travel abroad a lot on business.
4. Did you have a good journey / travel?
5. Pupils at school are going on a day tour / trip to Madrid.