Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
ad·gair
→
Irish
agra
(mention)
→
Irish
agair
(inherited)
→
Scottish Gaelic
agairt
(inherited)
→
Scottish Gaelic
agair
(inherited)