Examples: cartography card archaeology archetype monarchy legal loyal purse personal cinema kinase car carpenter hippopotamus Mesopotamia dative data date
...
Esperanto amo
Esperanto ami (affix)
Esperanto -o (affix)

Esperanto enamiĝi (affix)
Esperanto enamiĝo (affix)
Esperanto malamo (affix)
Esperanto amrilato (compound)
Esperanto amego (suffix)
Esperanto am-rendevuo (affix)
Esperanto amafero (affix)
Esperanto amdeklaro (affix)
Esperanto amdonanto (compound)
Esperanto amintrigo (affix)
Esperanto amkanto (compound)
Esperanto amkonfeso (compound)
Esperanto amplena (compound)
Esperanto ampoemo (compound)
Esperanto amrakonto (compound)
Esperanto amsento (affix)
Esperanto amromano (compound)
Esperanto homamo (affix)
Esperanto memamo (affix)
Esperanto senama (affix)
Esperanto sinamo (affix)
Ido amo (borrowed)