Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
aerach
←
English
gay
(semantic loan)
←
Irish
aer
(affix)
←
Irish
-ach
(affix)
←
Middle Irish
aerach
(inherited)
→
Irish
aeracht
(mention)