You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.
Example: Category: HOMOPHONIC PAIRS 
Clue: It's a notation on a percussion store to clash
Example solution: cymbal symbol
Example explanation: "Cymbal" and "symbol" both have the same pronunciations but different meanings, hence they are homophonic pairs. A symbol is the notation and a cymbal is a percussion instrument that clashes and rings.

Problem: Category: FAMOUS NAMES 
Clue: In the 19th century he created a new type of reference work, a dictionary named from the Greek word for "treasury"

Solution: roget