Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
effaith
←
Latin
effectus
(borrowed)
→
Welsh
effeithio
(affix)
→
Welsh
sgileffaith
(compound)
→
Welsh
effeithiol
(affix)
→
Welsh
effeithlon
(affix)