Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Italian
diece
←
Proto-Indo-European
*déḱm̥
(inherited)
←
Latin
decem
(inherited)
→
Corsican
dece
(cognate)
→
Italian
dieci
(mention)
→
Piedmontese
des
(cognate)