diarrhoetic vs diarrheal

diarrhoetic and diarrheal both are adjectives.

Word	Noun	Adjective	Verb	Adverb
diarrhoetic	No	Yes	No	No
diarrheal	No	Yes	No	No

As adjectives, diarrhoetic and diarrheal are synonyms defined as:

Other synonyms of diarrhoetic include diarrheic, diarrhetic, diarrhoeal, diarrhoeic.

diarrhoetic (adjective)	diarrheal (adjective)
of or relating to diarrhea	of or relating to diarrhea