Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Proto-Indo-European
*puǵ-no-
→
Portuguese
punhal
(derived)
→
Romansch
pugn
(derived)
→
Romansch
puogn
(derived)