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Finnish ruoko
Proto-Finnic *rooko (inherited)
Proto-West Germanic *brōk (derived)
Karelian ruogo (cognate)
Veps rogo (cognate)

Estonian roog (cognate)
Finnish järviruoko (compound)
Finnish ruokosirkkalintu (affix)
Finnish ruoikko (suffix)
Finnish ruokokieli (affix)
Finnish ruokosokeri (affix)
Finnish sokeriruoko (compound)
Finnish ruokohelpi (compound)
Finnish bamburuoko (affix)
Finnish ruokokerttunen (affix)
Finnish ruokoinen (suffix)
Finnish jättiruoko (affix)
Finnish ruokokasvi (affix)
Finnish ruokokutoja (affix)
Finnish ruokomatto (affix)
Finnish ruokonata (affix)
Finnish ruokopilli (affix)
Finnish ruo’onkorsi (compound)
Finnish ruoisto (affix)
Veps rogo (cognate)