Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
English
Marcomanni
←
Proto-Germanic
*markō
(derived)
←
Proto-Germanic
*mann-
(mention)
←
Latin
Marcomanni
(derived)
→
English
Marcomannic
(suffix)