Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Corsican
trè
←
Proto-Indo-European
*tréyes
(inherited)
←
Italian
tre
(cognate)
←
Proto-Italic
*trēs
(inherited)
←
Latin
tres
(inherited)
←
Romanian
trei
(cognate)