Chesty and scythe, e.g. (8)
I believe the answer is:
anagrams
(Other definitions for anagrams that I've seen before include "Words made by rearranging the letters of others" , "Words with letters transposed to form other words" , "Word jumbles" , "Words turned into other words" , ""Sword" from "words" and "seraph" from "phrase", for example" .)