I was asking because I saw some ads for copywriters recently and the ads specified needing so many years of ad writing experience. Yet, in the same ad, the word "copywriter" was used a couple of times.
I've worked as a copywriter for a while, creating landing pages and sales copy. Every client that contacted me, always referred to me as a copywriter. Yet, the ads specify the need for an ad writer. So I just wanted to know what the difference was, if any.