Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
tar-
←
Irish
thar
(mention)
←
Old Irish
tar
(inherited)
→
Irish
tarchuir
(affix)
→
Irish
tarnocht
(affix)