Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
ieldu
←
Old English
eald
(suffix)
←
Old English
u
(suffix)
←
Proto-West Germanic
*aldī
(inherited)
→
English
period
(cognate)
→
English
eld
(inherited)
→
Middle English
elde
(inherited)