Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
hapax legomenon
←
Ancient Greek
[[ἅπαξ]] [[λεγόμενον]]
(derived)
←
Ancient Greek
ἅπαξ
(mention)
←
Ancient Greek
λεγόμενον
(mention)
←
Ancient Greek
λέγω
(mention)
←
Proto-Indo-European
*sem-
(root)
→
German
hapax legomenon
(cognate)
→
Greek
άπαξ λεγόμενον
(mention)