Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
áitheasach
←
Irish
áitheas
(affix)
←
Irish
-ach
(affix)
←
Old Irish
[[áithesach]], [[áthasach]]
(inherited)
←
Old Irish
[[áithes]], [[áthas]]
(mention)