black bile vs bodily fluid

black bile and bodily fluid both are nouns.

Word	Noun	Adjective	Verb	Adverb
black bile	Yes	No	No	No
bodily fluid	Yes	No	No	No

As nouns, bodily fluid is a hypernym of black bile; that is, bodily fluid is a word with a broader meaning than black bile:

black bile: a humor that was once believed to be secreted by the kidneys or spleen and to cause sadness and melancholy
bodily fluid: the liquid parts of the body

Other hypernyms of black bile include body fluid, humor, humour, liquid body substance.

black bile (noun)	bodily fluid (noun)
a humor that was once believed to be secreted by the kidneys or spleen and to cause sadness and melancholy	the liquid parts of the body