Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
eponym
←
English
eponymous
(back-formation)
←
English
-onym
(affix)
→
English
eponymic
(suffix)
→
English
eponymize
(suffix)
→
English
eponymist
(suffix)
→
Dutch
eponiem
(mention)