Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
barra
←
Proto-Celtic
*barros
(derived)
←
Irish
barr
(cognate)
←
Galician
barrela
(link)
←
Galician
combarro
(link)
←
Proto-Indo-European
*bʰers-
(derived)
→
Galician
barreira
(suffix)