DaQ דק is thin (Genesis 41:3). An antonym by reversal of dental-gutturals. [ACUTE, DAGGER]
כדור KahDOOR is a ball or globe, and means “round about.” K[H]aD חד is sharp ) [ACUTE] , an antonym by guttural-dental shift .
KahD, Kahf-Dalet, is a subroot of being rounded, obtuse, blunt. כד KahD is the rounded pitcher [CADDY, CANTEEN entries].
Langue (French) or the longer LANGUAGE, a t o n g u e, is a nasalization (extra N) of Edenic לקק LaQahQ, lick. G from Koof is common.
Now you are getting new insights into the language-lingua-tongue connection, and why LICK isn't spelled "lik."