Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cotiau
←
Welsh
cot
(affix)
←
Welsh
-iau
(affix)
←
Welsh
côt
(affix)
←
Welsh
-iau
(affix)