Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
lucta
←
Proto-Indo-European
*lewg-
(root)
←
Latin
luctor
(mention)
←
Latin
luctātiō
(mention)
→
Catalan
lluita
(mention)
→
Ido
lukto
(derived)