Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ancient Greek
ἀτάρ
←
Proto-Indo-European
*éti
(derived)
←
Proto-Indo-European
*h₂et-
(derived)
←
Tocharian B
ate
(cognate)