<p><strong>Noun</strong></p><ul><li>that of which a thing consists; physical matter or material: form and substance.</li><li>a species of matter of definite chemical composition: a chalky substance.</li><li>controlled substance.</li><li>the subject matter of thought, discourse, study, etc.</li><li>Synonyms: subject, theme</li><li>the actual matter of a thing, as opposed to the appearance or shadow; reality.</li><li>Synonyms: essence</li><li>substantial or solid character or quality: claims lacking in substance.</li><li>consistency; body: soup without much substance.</li><li>the meaning or gist, as of speech or writing.</li><li>Synonyms: pith, import, significance</li><li>something that has separate or independent existence.</li><li>Philosophy: something that exists by itself and in which accidents or attributes inhere; that which receives modifications and is not itself a mode; something that is causally active; something that is more than an event.</li><li>the essential part of a thing; essence.</li><li>a thing considered as a continuing whole.</li><li>possessions, means, or wealth: to squander one's substance.</li><li>Linguistics: the articulatory or acoustic reality or the perceptual manifestation of a word or other construction (form).</li><li>a standard of weights for paper.</li></ul>