Published in 2006 by Oxford University Press, The Ring of Words details J.R.R. Tolkien's role as assistant to editor Henry Bradley from 1918 to 1920. Tolkien was tasked with finding etymologies for words in the 'W' section, which were mostly of Germanic origin.
The book gives a history of the change of English prose styles and assesses some 19th century English literature bearing parallels to unique or archaic word tendencies in Tolkien's fantasy writings.
Lastly, studies are given of over forty words which Tolkien either coined or drew from the past (such as 'warg', 'moot', 'carrock', 'Mannish', and 'Arkenstone') that exemplify his craftsmanship with Anglic roots.