matrix vs body substance

matrix and body substance both are nouns.

Word	Noun	Adjective	Verb	Adverb
matrix	Yes	No	No	No
body substance	Yes	No	No	No

As nouns, body substance is a hypernym of matrix; that is, body substance is a word with a broader meaning than matrix:

matrix (noun)	body substance (noun)
mold used in the production of phonograph records, type, or other relief surface	the substance of the body
the formative tissue at the base of a nail
the body substance in which tissue cells are embedded
(mathematics) a rectangular array of quantities or expressions set out by rows and columns; treated as a single element and manipulated according to rules
an enclosure within which something originates or develops
(geology) a mass of fine-grained rock in which fossils, crystals, or gems are embedded