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collection of particles comparison table
Subject has volume has momentum has material has velocity has mass has extent has angular momentum has definition has location is a kind of has temperature
phase of matter       When used in reference to matter, describes its possible states: solid phase, liquid phase, gas phase. More generally, refers to the possible descriptions of a physical system as features on which it depends (temperature, string coupling constant values, form of spacetime, etc.) are varied.or center of gravitycollection of particles 

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