Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
tasco
←
Proto-Celtic
*taskos
(derived)
←
Galatian
τασκός
(cognate)
→
Galician
tascar
(mention)