The meaning of "κανένας- καμία- κανένα" is none.
But in Greek we use "κανένας" before a masculine noun , for example "κανένας άνθρωπος" = no man
"Καμία" before a feminine noun, for example "καμία γυναικα" = no woman and "κανένα" before a neutral noun, for example "κανένα μάθημα" = no lesson
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Vasiliki Baskou, Instructor/Director, https://learn-greek-online.com.