Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Manx
awin
←
Proto-Celtic
*abū
(inherited)
←
Welsh
afon
(cognate)
←
Proto-Indo-European
*h₂ep-
(root)
←
Proto-Indo-European
*h₂ep-
(inherited)
←
Old Irish
[[ab]], [[aub]]
(inherited)
→
Manx
crouw-awin
(compound)