diarrhoeal vs diarrhoetic

diarrhoeal and diarrhoetic both are adjectives.

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

As adjectives, diarrhoeal and diarrhoetic are synonyms defined as:

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

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