Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Scottish Gaelic
dragh
←
Old English
trega
(cognate)
←
Proto-Indo-European
*dreǵʰ-
(derived)
→
Scottish Gaelic
draghail
(suffix)