Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
French
quatre-vingts
←
French
quatre
(mention)
←
French
vingt
(mention)
←
Irish
fichead
(cognate)
←
Latin
octōgintā
(mention)