Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
cunnian
←
Proto-West Germanic
*kunnēn
(inherited)
→
English
try
(cognate)
→
English
cunning
(mention)
→
English
aleconner
(mention)
→
Old Saxon
kunnon
(cognate)