Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
academi
←
English
academy
(borrowed)
→
Welsh
academaidd
(affix)
→
Welsh
academydd
(affix)
→
Welsh
academïau
(affix)