Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Portuguese puro
← Proto-Indo-European *pewH- (inherited)
← Latin pūrus (inherited)
← Old Portuguese puro (inherited)

→ Portuguese apurar (affix)
→ Portuguese impuro (affix)
→ Portuguese puramente (affix)
→ Portuguese purista (affix)
→ Portuguese puríssimo (affix)