rhizopod vs protozoan

rhizopod and protozoan both are nouns.

Word	Noun	Adjective	Verb	Adverb
rhizopod	Yes	No	No	No
protozoan	Yes	Yes	No	No

As nouns, protozoan is a hypernym of rhizopod; that is, protozoan is a word with a broader meaning than rhizopod:

rhizopod: protozoa characterized by a pseudopod
protozoan: any of diverse minute acellular or unicellular organisms usually nonphotosynthetic

Other hypernyms of rhizopod include protozoon.

rhizopod (noun)	protozoan (noun)
protozoa characterized by a pseudopod	any of diverse minute acellular or unicellular organisms usually nonphotosynthetic

rhizopod (adjective)	protozoan (adjective)
	of or relating to the Protozoa