excretion vs piddle

excretion and piddle both are nouns.

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

As nouns, piddle is a hyponym of excretion; that is, piddle is a word with a more specific, narrower meaning than excretion:

excretion: waste matter (as urine or sweat but especially feces) discharged from the body
piddle: liquid excretory product

excretion (noun)	piddle (noun)
the bodily process of discharging waste matter	liquid excretory product
waste matter (as urine or sweat but especially feces) discharged from the body

excretion (verb)	piddle (verb)
	eliminate urine
	waste time; spend one's time idly or inefficiently