Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
morthwyl
←
Breton
morzhol
(cognate)
←
Proto-Brythonic
*morθul
(inherited)
←
Latin
martulus
(derived)
←
Latin
martellus
(mention)
←
Middle Welsh
morthwl
(inherited)
→
Welsh
morthwylio
(affix)