Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tocharian A
ārki
←
Proto-Indo-European
*h₂erǵ-
(derived)
←
Proto-Tocharian
*ārkwi
(inherited)
←
Latin
argentum
(cognate)
←
Tocharian B
ārkwi
(cognate)
→
Tocharian B
ārkwi
(cognate)