“Factor Words: A Collection of the O’Reilly Factor’s Favorite Words of the Day” is a revised edition textbook authored by Bill O’Reilly, focusing on grammar and punctuation in the subject area of language arts and disciplines. Published in 2012 by an independent publisher, this trade paperback is written in English and includes a selection of words that O’Reilly finds particularly intriguing. This book offers a unique perspective on language and serves as a valuable resource for those interested in idioms, etymology, and effective communication.