behind vs excretion

behind and excretion both are nouns.

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

behind (noun)	excretion (noun)
the fleshy part of the human body that you sit on	the bodily process of discharging waste matter
	waste matter (as urine or sweat but especially feces) discharged from the body

behind (adjective)	excretion (adjective)
having the lower score or lagging position in a contest

behind (adverb)	excretion (adverb)
in or to or toward the rear
remaining in a place or condition that has been left or departed from
in debt
in or into an inferior position
showing a time that is earlier than the actual time