Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
caitheamh
←
Old Irish
caithem
(inherited)
→
Irish
frithchaitheamh
(affix)
→
Irish
anchaitheamh
(affix)
→
Irish
caifeacht
(affix)
→
Irish
caifeach
(affix)