ichor vs body fluid

ichor and body fluid both are nouns.

Word	Noun	Adjective	Verb	Adverb
ichor	Yes	No	No	No
body fluid	Yes	No	No	No

As nouns, body fluid is a hypernym of ichor; that is, body fluid is a word with a broader meaning than ichor:

Other hypernyms of ichor include bodily fluid, humor, humour, liquid body substance.

ichor (noun)	body fluid (noun)
a fluid product of inflammation	the liquid parts of the body
(Greek mythology) the rarified fluid said to flow in the veins of the Gods