We used to use rambling for a gentle country walk through fields etc. We'd say we were fell walking if we went out for a day up the mountains in the Lake Distr

We used to use rambling for a gentle country walk through fields etc. We'd say we were fell walking if we went out for a day up the mountains in the Lake District, we'd wear walking boots. If it was for a night or more it would either be camping or an expedition - as in DofE. Tabbing tends to be a military term as far as I'm aware. I don't remember using the term hiking until recently.