horseshit vs Irish bull

horseshit and Irish bull both are nouns.

Word	Noun	Adjective	Verb	Adverb
horseshit	Yes	No	No	No
Irish bull	Yes	No	No	No

As nouns, horseshit and Irish bull are synonyms defined as:

Other synonyms of horseshit include bull, bullshit, crap, dogshit, shit.

horseshit (noun)	Irish bull (noun)
Obscene word for unacceptable behavior	Obscene word for unacceptable behavior