Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Primitive Irish
ᚔᚅᚓᚊᚐᚌᚂᚐᚄ
←
Proto-Celtic
*enekʷom
(derived)
←
Proto-Celtic
*glastos
(mention)