Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
aibhéis
←
Breton
ervoas
(cognate)
←
Welsh
affwys
(cognate)
←
Ancient Greek
ἄβυσσος
(derived)
←
Latin
abyssus
(derived)
←
Old Irish
abis
(inherited)
→
Esperanto
abismo
(cognate)
→
Irish
aibhéiseach
(affix)