Shall be broken to pieces (συνθλασθησετα). Future passive indicative of συνθλαω, a rather late compound, only here in the N.T. unless Matthew 21:44 is genuine. It means to shatter.

Will scatter him as dust (λικμησε). From λικμαω, an old verb to winnow and then to grind to powder. Only here in the N.T. unless in Matthew 21:44 is genuine, which see.