substance >> ˈsʌbst(ə)ns
Definition: [noun] a particular kind of matter with uniform properties.
Example: a steel tube coated with a waxy substance
Definition: [noun] the real physical matter of which a person or thing consists and which has a tangible, solid presence.
Example: proteins compose much of the actual substance of the body
Definition: [noun] the quality of being important, valid, or significant.
Example: he had yet to accomplish anything of substance
Definition: [noun] the essential nature underlying phenomena, which is subject to changes and accidents.