Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
gwaredu
←
Proto-Celtic
*uɸoreteti
(inherited)
←
Welsh
gwared
(affix)
←
Welsh
-u
(affix)
←
Latin
succurrō
(derived)
←
Old Irish
fo·reith
(cognate)
←
Middle Welsh
gwaret
(inherited)