Come on HD, use your imagination!
If we were to hire a 152 and take off from a UK base, reach 4000ft , fly around for an hour and land, then I would class that as flying "around" the UK/home.
If we were in a wide body, taking off from LHR, en route to HK, we may fly 'over' various countries, at >30,000ft. In that situation it feels more as if we're over the earth, rarther than a specific country.