Index of English words, starting with "et"

(1) - Etymology (n.) That part of grammar which relates to the changes in the form of the words in a language; inflection.
(2) - Etymology (n.) That branch of philological science which treats of the history of words, tracing out their origin, primitive significance, and changes of form and meaning.

(1) - Etymon (n.) Original or fundamental signification.
(2) - Etymon (n.) An original form; primitive word; root.