Mass is the product of density and volume (m = D x V) while density is ratio of mass per volume (D = m / V). Summary: 1.Mass is how much matter is present in a particular object. 2.Density is how much mass is present per unit of volume.
asâ¢sert /ÉËsÉrt/USA pronunciation v. [~ + object] 1  to state strongly or positively; declare strongly:asserted his innocence.[~ + (that) clause]asserted that he was innocent of the crime. 2  to make a claim to:Minorities are now asserting their right to be heard.
1. to clear from guilt, accusation, blame, etc, as by evidence or argument. 2. to provide justification for: his promotion vindicated his unconventional attitude. 3. to uphold, maintain, or defend (a cause, etc): to vindicate a claim. 4. (Law) Roman law to bring an action to regain possession of (property) under claim of legal title. 5. (Historical Terms) Roman law to bring an action to regain possession of (property) under claim of legal title.