As verbs the difference between trolling and roasting
is that trolling
is while roasting
As an adjective roasting is
As a noun roasting is
the act by which something is roasted.
- The day started out cool, but by noon it was roasting
The act by which something is roasted.
* 1885 , Henry Marion Howe, Copper smelting (page 15)
- These elements are expelled more completely by a large number of comparatively incomplete roastings (alternated, of course, with smeltings) than by a smaller number of extremely thorough roastings