Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
hepta-
←
Ancient Greek
ἑπτά
(borrowed)
→
English
maltoheptaose
(affix)
→
English
heptamethoxyflavone
(affix)
→
English
xyloheptaose
(affix)
→
English
phagraphene
(blend)
→
English
heptalingual
(affix)
→
English
heptaploid
(affix)
→
English
heptadeca-
(mention)