irregularity vs excretion

irregularity and excretion both are nouns.

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

irregularity (noun)	excretion (noun)
behavior that breaches the rule or etiquette or custom or morality	the bodily process of discharging waste matter
not characterized by a fixed principle or rate; at irregular intervals	waste matter (as urine or sweat but especially feces) discharged from the body
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