piddle vs excretion

piddle and excretion both are nouns.

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

As nouns, excretion is a hypernym of piddle; that is, excretion is a word with a broader meaning than piddle:

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

Other hypernyms of piddle include body waste, excrement, excreta, excretory product.

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

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