Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
glanaid
←
Proto-Indo-European
*ǵʰelh₃-
(root)
←
Old Irish
glan
(affix)
←
Old Irish
-aid
(affix)
→
Irish
glan
(inherited)
→
Scottish Gaelic
glan
(inherited)
→
Manx
glen
(inherited)