kar stone Armenian
nak transport in Turkish
kark, gark vehicle, carrier Armenian
ak jewel, eye Armenian

Possibly means “the carrier of the jewel.”

“Karnak is an Armenian word, and is connected with the Greek idea of the body being the tomb of the soul.”  Orage quoted by Nott in Teachings of Gurdjieff, p128. Tomb of the soul or the vehicle of the soul?

Karnak is also the name of the largest ancient temple in Egypt and Carnac is the name of the largest collection of standing stones in Europe (in france)