Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Galician
oito
←
Latin
octō
(inherited)
←
Old Portuguese
oito
(inherited)
←
Old Portuguese
oyto
(mention)
→
Galician
dezaoito
(mention)