Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
idéal
←
French
idéal
(borrowed)
←
Ancient Greek
ἰδέᾱ
(derived)
←
Proto-Indo-European
*weyd-
(root)
→
Irish
idéalach
(affix)
→
Irish
idéalaí
(affix)