Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Tocharian A
ckācar
←
Proto-Indo-European
*dʰugh₂tḗr
(derived)
←
Proto-Tocharian
*täkācër
(inherited)
←
Tocharian B
tkācer
(cognate)
→
Old English
dohtor
(cognate)
→
Tocharian B
tkācer
(cognate)