obligate anaerobe vs anaerobe

obligate anaerobe and anaerobe both are nouns.

Word	Noun	Adjective	Verb	Adverb
obligate anaerobe	Yes	No	No	No
anaerobe	Yes	No	No	No

As nouns, anaerobe is a hypernym of obligate anaerobe; that is, anaerobe is a word with a broader meaning than obligate anaerobe:

obligate anaerobe: an organism that cannot grow in the presence of oxygen
anaerobe: an organism (especially a bacterium) that does not require air or free oxygen to live

obligate anaerobe (noun)	anaerobe (noun)
an organism that cannot grow in the presence of oxygen	an organism (especially a bacterium) that does not require air or free oxygen to live