sporozoan vs protozoon

sporozoan and protozoon both are nouns.

Word	Noun	Adjective	Verb	Adverb
sporozoan	Yes	No	No	No
protozoon	Yes	No	No	No

As nouns, protozoon is a hypernym of sporozoan; that is, protozoon is a word with a broader meaning than sporozoan:

sporozoan: parasitic spore-forming protozoan
protozoon: any of diverse minute acellular or unicellular organisms usually nonphotosynthetic

Other hypernyms of sporozoan include protozoan.

sporozoan (noun)	protozoon (noun)
parasitic spore-forming protozoan	any of diverse minute acellular or unicellular organisms usually nonphotosynthetic