weewee vs excretion

weewee and excretion both are nouns.

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

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

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

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

weewee (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