Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
cwtsh
←
Middle English
couche
(borrowed)
→
English
cwtch
(borrowed)
→
Welsh
cwtshys
(affix)
→
Welsh
cwtsio
(affix)