anoxia vs anemic anoxia

anoxia and anemic anoxia both are nouns.

Word	Noun	Adjective	Verb	Adverb
anoxia	Yes	No	No	No
anemic anoxia	Yes	No	No	No

As nouns, anemic anoxia is a hyponym of anoxia; that is, anemic anoxia is a word with a more specific, narrower meaning than anoxia:

anoxia: severe hypoxia; absence of oxygen in inspired gases or in arterial blood or in the tissues
anemic anoxia: anoxia resulting from a decreased concentration of hemoglobin

Other hyponyms of anoxia include anoxic anoxia, ischemic anoxia, stagnant anoxia.

anoxia (noun)	anemic anoxia (noun)
severe hypoxia; absence of oxygen in inspired gases or in arterial blood or in the tissues	anoxia resulting from a decreased concentration of hemoglobin