Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cairdeach
←
Irish
cara
(affix)
←
Irish
-ach
(affix)
←
Proto-Indo-European
*keh₂-
(root)
←
Middle Irish
cairdech
(inherited)
→
Irish
cairde
(link)