Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
Elen
←
German
Elch
(mention)
←
Proto-Indo-European
*eln-
(derived)
←
Lithuanian
elnias
(derived)
→
English
elk
(cognate)