Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
German
fachen
←
Middle High German
fochen
(inherited)
←
Latin
focus
(derived)
→
German
entfachen
(prefix)
→
German
anfachen
(prefix)