👉 Unduplicative is a concept in linguistics that refers to a word or phrase that can be used more than once in a sentence. It's similar to a duplicate, but it only occurs once for each usage of the word or phrase. For example, "book" and "books" are unduplicative because they both mean something else (a book is a book, while a book is a book). However, "bookstore" and "bookshop" are not unduplicative because
