零 （レイ） zero, nought

零細 （レイサイ） insignificant, trifling, paltry, cottage (industry), tiny (company)

漂零 （ヒョウレイ） being ruined (reduced to poverty), falling low, going under, coming to ruin

飄零 （ヒョウレイ） fluttering to the ground (of a leaf or petal), wandering, roaming, coming down in the world, going to ruin, falling low

０ （ゼロ） zero, 0, nought, nil, nothing, zilch

零因子 （ゼロいんし） zero divisor, null factor, nil factor

零す （こぼす） to spill, to drop, to shed (tears), to grumble (about), to complain (of), to let (one's feelings) show

零れる （こぼれる） to spill, to fall out of, to overflow, to peek through, to become visible (although normally not), to escape (of a smile, tear, etc.)