Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
folcmhar
←
Irish
folc
(affix)
←
Irish
-mhar
(affix)
←
Old Irish
folcmar
(cognate)
→
Irish
folc
(link)