Conundrums(noun)
A confusing problem or question that is very difficult to solve.
Hindi meaning:समस्या
Synonyms: Problem, Difficulty, Puzzle, Dilemma
Antonyms: Sorted, Clear, Solution, Ease
Example: The role of clouds is one of the big conundrums of climatology.
Trick to remember: Drum bajana bhi conundrum hai. 
