Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
rían
←
Proto-Celtic
*rēnos
(inherited)
→
English
Rhine
(cognate)
→
Irish
rian
(inherited)
→
Scottish Gaelic
rian
(inherited)