Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Ancient Greek
ὀκτα-
←
Ancient Greek
ὀκτώ
(mention)
←
Ancient Greek
ἑπτᾰ́
(mention)
←
Ancient Greek
τετρᾰ-
(mention)
←
Ancient Greek
ἑξᾰ-
(mention)
←
Ancient Greek
πεντᾰ-
(mention)