farting vs flatus

farting and flatus both are nouns.

Word	Noun	Adjective	Verb	Adverb
farting	Yes	No	No	No
flatus	Yes	No	No	No

As nouns, farting and flatus are synonyms defined as:

farting and flatus: a reflex that expels intestinal gas through the anus

Other synonyms of farting include breaking wind, fart, wind.

farting (noun)	flatus (noun)
a reflex that expels intestinal gas through the anus	a reflex that expels intestinal gas through the anus