Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*gʰneHdʰn-
→
English
gnat
(derived)
→
English
gnit
(derived)
→
German
Gnitze
(derived)