Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
ŷd
←
Proto-Celtic
*ɸitu
(inherited)
→
Welsh
ydfran
(affix)
→
Welsh
suran yr ŷd
(compound)