Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle Irish
ógánta
←
Irish
óg
(mention)
→
Irish
óigeanta
(inherited)
→
Irish
ógánta
(inherited)
→
Scottish Gaelic
òganta
(inherited)