Mountainous
Part of speech: adjective
Definition: having many mountains resembling a mountain, especially in size very difficult
Unsmooth
Part of speech: adjective
Definition: Not smooth; rough.
Difference between Mountainous and Unsmooth
What is the difference between Mountainous and Unsmooth?
Mountainous as an adjective is having many mountains while Unsmooth as an adjective is not smooth; rough.
We hope you now know whether to use Mountainous or Unsmooth in your sentence.