Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old English
reotan
←
Proto-Germanic
*reutaną
(inherited)
←
Proto-Indo-European
*HrewdH-
(root)
←
Proto-Indo-European
*HrewdH-
(derived)
←
Icelandic
rjóta
(cognate)