comfortable: travelling by ship / travelling by train
I think ... is more comfortable than ...
easy: English / Science
I think ... is easier than ...
interesting: History / Maths
I think ... is more interesting than ...
nice: cats / dogs
I think ... are nicer than ...
exciting: kayaking / skiing
I think ... is more exciting than ...
dangerous: rock climbing / diving
I think ... is more dangerous than ...
good: strawberry ice cream / chocolate ice cream
I think ... is better than ...
bad: a visit to the dentist / having a test
I think ... is worse than ...