Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
extancy
←
English
extant
(suffix)
←
English
cy
(suffix)
←
Latin
extantia
(mention)
←
Latin
exstantia
(mention)