Atom - Atom, Electron - Elecron, Proton - Proton, Pure substance - Pure substance, Mixture substance - Mixture substance, Length - Length, Mass - Mass, Time - Time, contact force - contact force, Non contact force - Non contact force, Linear motion - Linear motion, Curvilinear motion - Curvilenear motion, Circular motion - Circular motion, Rotatory motion - Rotatory motion, Oscillatory motion - Oscilatory motion, Zig zag - Zig Zag,

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