Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
data-bas
←
Welsh
data
(affix)
←
Welsh
bas
(affix)
←
English
database
(cognate)
→
Welsh
data-basau
(affix)