acanthocyte vs red blood cell

acanthocyte and red blood cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
acanthocyte	Yes	No	No	No
red blood cell	Yes	No	No	No

As nouns, red blood cell is a hypernym of acanthocyte; that is, red blood cell is a word with a broader meaning than acanthocyte:

acanthocyte: an abnormal red blood cell that has thorny projections of protoplasm
red blood cell: a mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues; a biconcave disc that has no nucleus

Other hypernyms of acanthocyte include erythrocyte, RBC.

acanthocyte (noun)	red blood cell (noun)
an abnormal red blood cell that has thorny projections of protoplasm	a mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues; a biconcave disc that has no nucleus