Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
garroo
←
Proto-Celtic
*garwos
(inherited)
←
Welsh
garw
(cognate)
←
Irish
-
(cognate)
←
Scottish Gaelic
garbh
(cognate)
←
Old Irish
garb
(inherited)