Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Irish
cogar
←
Welsh
cyngor
(cognate)
←
Old Irish
cocur
(inherited)
→
Welsh
cyngor
(link)
→
Irish
cogarnach
(mention)