Ok lets make this post interesting by explaining with a example.
If you Know the capitals of
USA,UK,Russia,China,Australia you know some facts and it is important for day to day tasks and maybe is a must for some profession.
Whereas,if you know the capitals of Trinidad and Tobago,Panama,Laos and Brunei you know some trivia.
Something that is trivial is not important or significant ie.,of little importance.