Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Latin
Rha
←
Ancient Greek
Ῥᾶ
(borrowed)
→
English
rhubarb
(derived)
→
Portuguese
ruibarbo
(mention)