Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Portuguese
mãy
←
Proto-Indo-European
*méh₂tēr
(derived)
←
Latin
mātrem
(derived)
←
Latin
māter
(mention)
←
Old Portuguese
madre
(mention)
→
Portuguese
mãe
(inherited)