Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Portuguese óxido
← French oxyde (borrowed)

→ Portuguese oxidar (affix)
→ Portuguese dióxido (prefix)
→ Portuguese peróxido (prefix)
→ Portuguese monóxido (prefix)
→ Portuguese subóxido (prefix)
→ Portuguese bióxido (prefix)
→ Portuguese tetraóxido (prefix)
→ Portuguese sesquióxido (prefix)