Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ancient Greek
δάκρυον
←
Ancient Greek
δάκρυα
(back-formation)
←
Ancient Greek
δάκρυ
(mention)
→
English
dacrocyte
(derived)