Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
llysfam
←
Welsh
llys
(prefix)
←
Welsh
mam
(prefix)
→
Breton
lezvamm
(cognate)
→
Welsh
llysfamau
(affix)