Verbiage
Part of speech: noun
Definition: Overabundance of words (US) The manner in which something is expressed in words;
Diction
Part of speech: noun
Definition: The effectiveness and degree of clarity of word choice, and presentation of said words.
Example sentence: I had to do a lot of preparation for 'Kaaka Muttai.' I had to literally spend every night and morning in the slums, observing the life of people there, and work on my diction.