Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Italian gas

→ Esperanto gaso (cognate)
→ Italian gassoso (suffix)
→ Italian biogas (affix)
→ Italian gassificare (suffix)
→ Italian gassare (affix)
→ Italian gasogeno (suffix)
→ Italian gasoso (suffix)
→ Italian degassificare (confix)
→ Italian gassista (affix)
→ Italian emogas (prefix)