Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Middle English
night-mare
←
Old English
*nihtmare
(inherited)
←
Middle English
nighte
(compound)
←
Middle English
mare
(compound)
→
English
nightmare
(inherited)