There are seven different Hebrew words translated 'ax' or 'axe,' with various shades of meaning. De 19:5; Jg 9:48; 2Sa 12:31; 1Ch 20:3; Ps 74:6; Jer 10:3; Eze 26:9; Mt 3:10; Lu 3:9.
And already the axe is lying at the root of the trees; every tree, therefore, not bearing good fruit, is cut down, and cast into the fire.
And already the axe also is lying at the root of the trees; every tree, therefore, not producing good fruit, is cut down, and cast into the fire."