Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
decadence
←
English
decay
(mention)
←
French
décadence
(derived)
←
Proto-Indo-European
*ḱh₂d-
(root)
←
Latin
(mention)
←
Latin
(mention)
→
English
decay
(mention)
→
Latin
decido
(link)