Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
broc
←
Proto-West Germanic
*brōk
(inherited)
→
English
broker
(cognate)
→
English
brock
(inherited)
→
Scots
brock
(derived)