Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Spanish
berro
←
Gaulish
*bẹrŭro-
(derived)
←
Proto-Celtic
*beru
(derived)
←
Old Irish
bir
(mention)
→
Galician
berro
(cognate)