Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
foradh
←
Irish
fara
(doublet)
←
Scottish Gaelic
faradh
(cognate)
←
Middle Irish
forad
(inherited)
→
Irish
fara
(doublet)