Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
derbyn
→
Welsh
derbynfa
(affix)
→
Welsh
derbyniad
(affix)
→
Welsh
derbyniol
(affix)
→
Welsh
derbyniwr
(affix)
→
Welsh
derbynneb
(affix)
→
Welsh
derbynnydd
(affix)