Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Danish
vidne
←
Proto-Germanic
*witniją
(inherited)
←
Proto-Germanic
*witaną
(mention)
←
Old Norse
vitni
(derived)
←
Old Norse
vitna
(derived)
→
Old English
witnes
(cognate)