karyoplasm vs living substance

karyoplasm and living substance both are nouns.

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

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

karyoplasm: the protoplasm that constitutes the nucleus of a cell
living substance: the substance of a living cell (including cytoplasm and nucleus)

Other hypernyms of karyoplasm include protoplasm.

karyoplasm (noun)	living substance (noun)
the protoplasm that constitutes the nucleus of a cell	the substance of a living cell (including cytoplasm and nucleus)