Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
crosáil
←
Irish
cros
(affix)
←
Irish
-áil
(affix)
←
Proto-Indo-European
*(s)ker-
(root)