excretion vs irregularity

excretion and irregularity both are nouns.

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

excretion (noun)	irregularity (noun)
the bodily process of discharging waste matter	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