Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
póc
←
Latin
pax
(borrowed)
→
Breton
pok
(cognate)
→
Irish
póg
(inherited)
→
Scottish Gaelic
pòg
(inherited)
→
Manx
paag
(inherited)