Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
fealsamh
←
Ancient Greek
φιλόσοφος
(derived)
←
Latin
philosophus
(derived)
←
Middle Irish
felsam
(inherited)
←
Old Irish
felsub
(inherited)
→
Irish
fealsúnacht
(affix)