Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
ciad
←
Old Irish
cét-
(inherited)
→
Scottish Gaelic
ciad-ghin
(compound)
→
Scottish Gaelic
air a' chiad sealladh
(compound)