Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ancient Greek
ἀρήγω
←
Proto-Germanic
*rōkijaną
(cognate)
←
Ancient Greek
ὀρέγω
(cognate)
←
Proto-Indo-European
*h₃reǵ-
(derived)
←
Latin
regō
(cognate)
→
Ancient Greek
ἀρωγή
(mention)