Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
géagach
←
Irish
géag
(affix)
←
Irish
-ach
(affix)
←
Old Irish
gécach
(inherited)
←
Old Irish
géc
(mention)
→
Irish
géagachán
(affix)