stagnant hypoxia vs hypoxia

stagnant hypoxia and hypoxia both are nouns.

Word	Noun	Adjective	Verb	Adverb
stagnant hypoxia	Yes	No	No	No
hypoxia	Yes	No	No	No

As nouns, hypoxia is a hypernym of stagnant hypoxia; that is, hypoxia is a word with a broader meaning than stagnant hypoxia:

stagnant hypoxia: hypoxia resulting from slow peripheral circulation (such as follows congestive cardiac failure)
hypoxia: oxygen deficiency causing a very strong drive to correct the deficiency

stagnant hypoxia (noun)	hypoxia (noun)
hypoxia resulting from slow peripheral circulation (such as follows congestive cardiac failure)	oxygen deficiency causing a very strong drive to correct the deficiency