eosinophile vs white blood cell

eosinophile and white blood cell both are nouns.

Word	Noun	Adjective	Verb	Adverb
eosinophile	Yes	No	No	No
white blood cell	Yes	No	No	No

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

eosinophile: a leukocyte readily stained with eosin
white blood cell: blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system

Other hypernyms of eosinophile include leucocyte, leukocyte, WBC, white blood corpuscle, white cell, white corpuscle.

eosinophile (noun)	white blood cell (noun)
a leukocyte readily stained with eosin	blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system