Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
ochd
←
Proto-Celtic
*oxtū
(inherited)
←
Proto-Indo-European
*oḱtṓw
(inherited)
←
Old Irish
ocht
(inherited)
→
Scottish Gaelic
ochd-chasach
(affix)