Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
seldere
←
Old English
seldor
(derived)
←
Middle English
selde
(mention)
→
Middle English
selde
(back-formation)
→
Middle English
selde
(link)