Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
tairnge
←
Proto-Celtic
*tarankyos
(inherited)
←
Proto-Indo-European
*terh₁-
(root)
→
Spanish
tranca
(cognate)
→
Irish
tairne
(inherited)
→
Galician
tranca
(cognate)
→
Galician
trangallo
(cognate)
→
Portuguese
tranca
(cognate)