plasm vs living substance

plasm and living substance both are nouns.

Word	Noun	Adjective	Verb	Adverb
plasm	Yes	No	No	No
living substance	Yes	No	No	No

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

plasm: the protoplasm of the germ cells that contains chromosomes and genes
living substance: the substance of a living cell (including cytoplasm and nucleus)

Other hypernyms of plasm include protoplasm.

plasm (noun)	living substance (noun)
the protoplasm of the germ cells that contains chromosomes and genes	the substance of a living cell (including cytoplasm and nucleus)
the colorless watery fluid of the blood and lymph that contains no cells, but in which the blood cells (erythrocytes, leukocytes, and thrombocytes) are suspended