Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Greek
γόνατο
←
Greek
γόνατα
(mention)
←
Ancient Greek
γόνυ
(inherited)
←
Ancient Greek
γόνατος
(mention)
←
Proto-Hellenic
*gónu
(inherited)
←
Proto-Indo-European
*ǵónu
(inherited)