As mecland said, but I'd add to "travel"
Not just train travel.
Do you travel much? = Do you go places (distant places) any method
Can not say "do you journey much?"
Can say "Do you tour much?" as with mecland's meaning
Does this job involve travel?
Travel is my hobby. (any method)
"Journey" has an idea of long distance, or difficulty or arduous.
"Tour" has an idea of looking round more than one place.
A music group will tour, or go on tour. That is, travel to multiple places as one journey.