Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
camp
←
Proto-Brythonic
*kamp
(inherited)
←
Latin
campus
(derived)
←
Middle Welsh
camp
(inherited)
→
Welsh
campus
(affix)
→
Welsh
campwaith
(affix)
→
Welsh
campwr
(affix)
→
Welsh
campfa
(affix)