Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Eastern Huasteca Nahuatl
metztli
←
Proto-Nahuan
*meeȼtli
(inherited)
←
Proto-Uto-Aztecan
*mïca
(inherited)
←
Classical Nahuatl
mētztli
(cognate)
←
Classical Nahuatl
metztli
(cognate)
→
Central Huasteca Nahuatl
metzti
(cognate)