irregularity vs excrement

irregularity and excrement both are nouns.

Word	Noun	Adjective	Verb	Adverb
irregularity	Yes	No	No	No
excrement	Yes	No	No	No

irregularity (noun)	excrement (noun)
behavior that breaches the rule or etiquette or custom or morality	waste matter (as urine or sweat but especially feces) discharged from the body
not characterized by a fixed principle or rate; at irregular intervals
an irregular asymmetry in shape; an irregular spatial pattern
irregular and infrequent or difficult evacuation of the bowels; can be a symptom of intestinal obstruction or diverticulitis