Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Frisian
fridom
←
Proto-West Germanic
*frijadōm
(inherited)
←
Old Frisian
frī
(suffix)
←
Old Frisian
dōm
(suffix)