white cell vs blood corpuscle

white cell and blood corpuscle both are nouns.

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

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

white cell: blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system
blood corpuscle: either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets

Other hypernyms of white cell include blood cell, corpuscle, free phagocyte.

white cell (noun)	blood corpuscle (noun)
blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system	either of two types of cells (erythrocytes and leukocytes) and sometimes including platelets