Yes, but they also share a history and a set of syntax and ideas... Well, except Dylan, syntax-wise. But ultimately this is an argument about terminology. And the majority of people would say that scheme is a lisp. A lisp. Not a language derived from lisp, that is independent. A LISP. in the LISP family, because that is a thing. And if you want proof that that is what most people think, you need only check Wikipedia: <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Category:Lisp_programming_language_family" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Category:Lisp_programming_lang...</a>