Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
achub
←
Proto-Brythonic
*axʉb
(inherited)
←
Latin
occupō
(derived)
←
Old Breton
acupot
(cognate)
←
Middle Welsh
achup
(inherited)
→
Welsh
achubiaeth
(affix)
→
Welsh
achubwr
(affix)
→
Welsh
achubol
(affix)