Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Portuguese grave
English fall down (link)
Proto-Indo-European *gʷréh₂us (inherited)
Latin gravis (inherited)
Portuguese agudo (link)
Portuguese gravemente (link)
Old Portuguese grave (inherited)

Portuguese gravemente (affix)
Portuguese gravíssimo (affix)