Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Galician serra
Spanish sierra (cognate)
Galician serradoiro (link)
Galician serrar (link)
Latin serra (inherited)
Latin sera (inherited)
Portuguese serra (cognate)
Old Portuguese serra (inherited)

Galician serrón (suffix)