Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
Eestour
←
Old English
ēastre
(inherited)
←
Proto-Indo-European
*h₂ews-
(derived)
→
English
Easter
(mention)