Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Central Nahuatl
chalxocotl
←
Classical Nahuatl
xalxocotl
(derived)
→
Classical Nahuatl
xalxocotl
(cognate)