Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
fome
←
Old English
fām
(inherited)
←
Proto-Germanic
*faimaz
(derived)
→
English
foam
(inherited)
→
Middle English
fomen
(affix)
→
Middle English
fomynge
(affix)
→
Middle English
fomy
(affix)