Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
chocallo
←
Proto-Celtic
*klokkos
(derived)
←
Welsh
cloch
(cognate)
←
Irish
clog
(cognate)
←
Galician
choca
(suffix)
←
Galician
allo
(suffix)
←
Portuguese
chocalho
(cognate)