Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
gruag
←
Middle Irish
*grúac
(inherited)
→
Scottish Gaelic
gruagach
(affix)
→
Old Irish
frac
(mention)