Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
-fach
←
Proto-Germanic
*faką
(derived)
←
Middle High German
vach
(inherited)
→
English
-fold
(cognate)
→
German
einfach
(affix)