The pottery-related Etsy treasuries I've been compiling continues with one dedicated to redware and terracotta. Though online definitions render more restricted definitions in terms of chronology (focusing on American redware), in practice the terms have wider applications. Thus, in my understanding redware is a hard, red stoneware. The term is also used to describe any common clay pottery that is reddish in color. Redware is also known as terra-cotta (different spellings encountered).