platelet vs protoplasm

platelet and protoplasm both are nouns.

Word	Noun	Adjective	Verb	Adverb
platelet	Yes	No	No	No
protoplasm	Yes	No	No	No

As nouns, protoplasm is a hypernym of platelet; that is, protoplasm is a word with a broader meaning than platelet:

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

Other hypernyms of platelet include living substance.

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