bird vs uropygium

bird and uropygium both are nouns.

Word	Noun	Adjective	Verb	Adverb
bird	Yes	No	Yes	No
uropygium	Yes	No	No	No

bird (noun)	uropygium (noun)
warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings	posterior part of a bird's body from which the tail feathers grow
badminton equipment consisting of a ball of cork or rubber with a crown of feathers
a cry or noise made to express displeasure or contempt
the flesh of a bird or fowl (wild or domestic) used as food
informal terms for a (young) woman

bird (verb)	uropygium (verb)
watch and study birds in their natural habitat