What is the difference in meaning between these three "Eternity" characters, if there is any?

The Oxford Etymologic Dictionary (OED) considers Ego / I as if it were a self-standing word developed within the Germanic and 'Indo-European'…
LUNCH - midday meal. Scholars explain its etymology as follows: 'Recorded since 1580; presumably short for luncheon, but earliest found also as…
Each word consists of two merged halves: the sound and the meaning (i.e. the form and the content), like a person with its body and soul.…