Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cuain
←
Irish
cuan
(alter)
←
Old Irish
cúan
(inherited)
→
Irish
cuan
(alter)
→
Irish
cuán
(link)