Ever wonder who writes dictionaries? They're called lexicographers. A lexicographer studies words and compiles the results into a dictionary.
This is one of several words for a certain type of writer or editor. Just as a playwright writes plays and a poet writes poems, a lexicographer puts together dictionaries. Lexicographer come up with definitions, determines parts of speech, gives pronunciations, and sometimes provides example sentences. Lexicographer need to do a lot of research to make sure they're defining a word correctly; dictionaries are books that people need to trust. If you love words, you might enjoy being a lexicographer.