Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
gwadu
←
Proto-Celtic
*wotāti
(inherited)
←
Proto-Indo-European
(inherited)
←
Proto-Indo-European
*weth₂-
(derived)
←
Latin
vetō
(cognate)
→
Welsh
gwadiad
(affix)