Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Saxon
treo
←
Proto-Germanic
*trewą
(inherited)
←
Proto-West Germanic
*treu
(inherited)
←
Proto-Indo-European
*dóru
(inherited)
→
Old Norse
tré
(cognate)