bulimia vs eating disorder

bulimia and eating disorder both are nouns.

Word	Noun	Adjective	Verb	Adverb
bulimia	Yes	No	No	No
eating disorder	Yes	No	No	No

As nouns, eating disorder is a hypernym of bulimia; that is, eating disorder is a word with a broader meaning than bulimia:

bulimia: a disorder of eating seen among young women who go on eating binges and then feel guilt and depression and self-condemnation
eating disorder: a disorder of the normal eating routine

bulimia (noun)	eating disorder (noun)
pathologically insatiable hunger (especially when caused by brain lesions)	a disorder of the normal eating routine
a disorder of eating seen among young women who go on eating binges and then feel guilt and depression and self-condemnation