Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
-arcacht
←
Irish
-acht
(affix)
←
Ancient Greek
ἀρχός
(derived)
←
Latin
-archia
(derived)
→
Irish
monarcacht
(affix)
→
Irish
heiptearcacht
(affix)
→
Irish
átarcacht
(affix)
→
Irish
olagarcacht
(affix)