Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
wolcen
←
Proto-Germanic
*wulkną
(inherited)
←
Proto-Germanic
*wulk-
(inherited)
←
Proto-Germanic
*walkaną
(mention)
→
English
cloud
(cognate)
→
English
welkin
(mention)
→
Middle English
welken
(mention)
→
Middle English
welkyn
(mention)