Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Portuguese espelho
Proto-Indo-European *speḱ- (derived)
Latin speculum (inherited)
Latin speciō (mention)
Portuguese espéculo (doublet)
Old Portuguese espello (inherited)

Galician espello (cognate)
Portuguese espelhar (suffix)