diarrhea vs looseness of the bowels

diarrhea and looseness of the bowels both are nouns.

Word	Noun	Adjective	Verb	Adverb
diarrhea	Yes	No	No	No
looseness of the bowels	Yes	No	No	No

As nouns, diarrhea and looseness of the bowels are synonyms defined as:

diarrhea and looseness of the bowels: frequent and watery bowel movements; can be a symptom of infection or food poisoning or colitis or a gastrointestinal tumor

Other synonyms of diarrhea include diarrhoea, looseness.

diarrhea (noun)	looseness of the bowels (noun)
frequent and watery bowel movements; can be a symptom of infection or food poisoning or colitis or a gastrointestinal tumor	frequent and watery bowel movements; can be a symptom of infection or food poisoning or colitis or a gastrointestinal tumor