Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
barda
←
Proto-Celtic
*wradyos
(derived)
←
Welsh
gwraidd
(cognate)
→
Galician
bardanca
(suffix)