Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Galician fillo
Proto-Indo-European *dʰeh₁y-li-os (derived)
Old Latin fīlios (derived)
Latin fīlius (inherited)
Old Portuguese fillo (inherited)

Aragonese fillo (cognate)
Galician fillar (mention)
Galician afillar (link)
Galician afillar (affix)
Italian figlio (cognate)