Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
gránna
←
Old Irish
gránda
(inherited)
←
Old Irish
gráin
(mention)
→
Irish
gráinne
(affix)
→
Irish
físghránnán
(affix)
→
Manx
graney
(cognate)