Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
pós
←
Latin
spōnsus
(borrowed)
←
Latin
spondeō
(mention)
←
Middle Irish
pósaid
(inherited)
→
Irish
pósadh
(affix)
→
Irish
athphós
(affix)