Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
hriuwan
←
Old English
hreowan
(cognate)
←
Proto-West Germanic
*hreuwan
(inherited)
←
Old High German
riuwan
(cognate)
→
Old English
hreowan
(cognate)