Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Celtic
*rannā
→
Welsh
rhan
(inherited)
→
Irish
roinn
(inherited)
→
Scottish Gaelic
roinn
(derived)
→
Manx
rheynn
(inherited)
→
Old Irish
rann
(inherited)