Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Norse
lakr
←
English
lack
(cognate)
←
Proto-Germanic
*laka-
(derived)
←
Proto-Germanic
*lak(k)ōn-
(mention)
←
Proto-Indo-European
*lok-néh₂-
(derived)
→
English
lack
(cognate)
→
Dutch
lak
(cognate)
→
Swedish
elak
(mention)