ground substance vs hyaloplasm

ground substance and hyaloplasm both are nouns.

Word	Noun	Adjective	Verb	Adverb
ground substance	Yes	No	No	No
hyaloplasm	Yes	No	No	No

As nouns, ground substance and hyaloplasm are synonyms defined as:

ground substance and hyaloplasm: the clear nongranular portion of the cytoplasm of a cell

ground substance (noun)	hyaloplasm (noun)
the body substance in which tissue cells are embedded	the clear nongranular portion of the cytoplasm of a cell
the clear nongranular portion of the cytoplasm of a cell