Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
faag
←
Irish
fág
(cognate)
←
Scottish Gaelic
fàg
(cognate)
←
Middle Irish
fácbaid
(inherited)
←
Old Irish
fo·ácaib
(inherited)