Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Classical Nahuatl
sombrero
→
Northern Puebla Nahuatl
xompilelo
(cognate)
→
Morelos Nahuatl
xomplelo
(cognate)