Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Icelandic
knega
←
English
know
(cognate)
←
Proto-Germanic
*knēaną
(inherited)
←
Proto-Indo-European
*ǵneh₃-
(derived)
←
Old Norse
kná
(inherited)
←
Old Norse
*knega
(mention)