Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
amaideach
←
Irish
amaid
(affix)
←
Irish
-ach
(affix)
←
Irish
amaideacht
(back-formation)
→
Irish
baoth
(link)