"Substance" is a word in LAW AND LEGAL, ENGLISH

Essence; the material or essential part of a tiling, as distinguished from “form.” See State v. Bnrgdoerfer, 107 Mo. 1, 17 S. W. 646, 14 L. R. A. 846; Hugov. Miller, 50 Minn. 105, 52 N. W. 381: Pierson v. Insurance Co., 7 IIoust. (Del.) 307, 31 Atl. 966

The most important element in any existence; the
characteristic and essential components of anything; the main part;
essential import; purport.

Body; matter; material of which a thing is made; hence,
substantiality; solidity; firmness; as, the substance of which a
garment is made; some textile fabrics have little substance.

Same as Hypostasis, 2.

Material possessions; estate; property; resources.

To furnish or endow with substance; to supply
property to; to make rich.

That which underlies all outward manifestations;
substratum; the permanent subject or cause of phenomena, whether
material or spiritual; that in which properties inhere; that which is
real, in distinction from that which is apparent; the abiding part of
any existence, in distinction from any accident; that which constitutes
anything what it is; real or existing essence.