Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cosain
←
Old Irish
con·sní
(inherited)
→
Irish
cosantóir
(affix)
→
Irish
cosaint
(affix)
→
Irish
cosaint
(mention)