Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
ehedydd
←
Welsh
ehedeg
(affix)
←
Welsh
-ydd
(affix)
←
Old Cornish
evidit
(cognate)
←
Middle Breton
ehuedez
(cognate)
→
Welsh
corhedydd
(affix)