thrombocyte vs living substance

thrombocyte and living substance both are nouns.

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

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

thrombocyte: tiny bits of protoplasm found in vertebrate blood; essential for blood clotting
living substance: the substance of a living cell (including cytoplasm and nucleus)

Other hypernyms of thrombocyte include protoplasm.

thrombocyte (noun)	living substance (noun)
tiny bits of protoplasm found in vertebrate blood; essential for blood clotting	the substance of a living cell (including cytoplasm and nucleus)