Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cafarr
←
Old Irish
cathbarr
(inherited)
←
Old Irish
cath
(mention)
←
Old Irish
barr
(mention)
→
Irish
barr
(link)