Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Sardinian
radichína
→
Romanian
rădăcină
(cognate)
→
Aromanian
arãdãtsinã
(cognate)
→
Aromanian
rãdzãtinã
(cognate)