乗冪[joubeki] power
冪乗[bekijou] a power
冪零[bekirei] nilpotent
冪乗演算子[bekijouenzanshi] exponential operator (**)

冪集合[bekishuugou] power set
冪級数[bekikyuusuu] power series
冪々[bekibeki] billowing (clouds, dust)
２の冪[ninobeki] power of two

零し話[koboshibanashi] complaining
取零す[torikobosu] to lose an easy game
爪で拾って箕で零す[tsumedehirottemidekobosu] penny wise and pound foolish
零落れる[ochibureru] to be ruined
零す[kobosu] to spill

零れる[koboreru] to spill
零下[reika] below zero
零行列[reigyouretsu] zero matrix
零細[reisai] insignificant