Most words in your manuscript will be roman text—unchanged by italics—and, apart from dialogue, will not be enclosed by quotation marks.
Yet sometimes writers are confused about italics and quotation marks, especially when dealing with named entities.
Proper names and places in foreign languages are never italicized.
And when rules are followed, the manuscript will have consistency; if you don’t know the rules, it’s likely that you won’t make the same choices consistently throughout a story.(I italicized them because in my example they are words used as words.) “Use caution, my dear.That pretty flower you like so much is : Use italics to emphasize a word or part of a word. A character who emphasizes words all the time may sound odd. Examples: I wanted a new dress, but I : Character thoughts can be expressed in multiple ways; italics is one of those ways.This means a book title is italicized, and chapter titles (but not chapter numbers) are in quotation marks.A TV show title is italicized, but episode titles are in quotation marks.