Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
sebac
←
Old English
heafoc
(borrowed)
→
Irish
seabhac
(inherited)
→
Scottish Gaelic
seabhag
(inherited)
→
Manx
shawk
(inherited)