Etymon and Signifier

Etymon noun - A simple form inferred as the common basis from which related words in several languages can be derived by linguistic processes.

Signifier and etymon are semantically related. In some cases you can use "Signifier" instead a noun "Etymon".

Signifier noun - The phonological or orthographic sound or appearance of a word that can be used to describe or identify something.

Etymon and signifier are semantically related. Sometimes you can replace term "Etymon" with "Signifier", this nouns are similar.