Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Welsh
llysfab
←
Welsh
llys
(prefix)
←
Welsh
mab
(prefix)
→
Breton
lezvab
(cognate)
→
Welsh
llysfeibion
(affix)