lymph vs body fluid

lymph and body fluid both are nouns.

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

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

lymph: a thin coagulable fluid (similar to plasma but) containing white blood cells (lymphocytes) and chyle; is conveyed to the blood stream by lymphatic vessels
body fluid: the liquid parts of the body

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

lymph (noun)	body fluid (noun)
a thin coagulable fluid (similar to plasma but) containing white blood cells (lymphocytes) and chyle; is conveyed to the blood stream by lymphatic vessels	the liquid parts of the body