Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
astud
←
Old French
astut
(derived)
←
Latin
astūtus
(derived)
←
Middle Welsh
astud
(derived)
→
Welsh
astudio
(mention)