Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old High German
kōsa
→
English
cosy
(derived)
→
English
chest
(cognate)
→
English
cosie
(derived)
→
Old English
ceas
(cognate)