Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
ammus
←
Old Irish
mess
(mention)
←
Old Irish
ad-
(affix)
←
Old Irish
mess
(affix)
→
Irish
amas
(inherited)
→
Irish
amas
(inherited(ga/gd))
→
Irish
aimsigh
(derived)