chromatin vs body substance

chromatin and body substance both are nouns.

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

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

chromatin: the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condenses into chromosomes
body substance: the substance of the body

chromatin (noun)	body substance (noun)
the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condenses into chromosomes	the substance of the body