Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
dringid
←
Proto-Celtic
*dringeti
(inherited)
←
Old Irish
drebraing
(mention)
←
Old Irish
lingid
(mention)
→
Welsh
dringo
(cognate)