Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Northern Puebla Nahuatl
sihuatl
→
Central Huasteca Nahuatl
sihuat
(cognate)
→
Classical Nahuatl
cihuatl
(cognate)