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bird vs twitterer twitterer vs bird

bird and twitterer both are nouns.

bird is a verb but twitterer is not a verb.

As nouns, twitterer is a hyponym of bird; that is, twitterer is a word with a more specific, narrower meaning than bird and twitterer is a type of bird with the definitions:
  • warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
bird (noun) twitterer (noun)
warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings a bird that twitters
the flesh of a bird or fowl (wild or domestic) used as food
informal terms for a (young) woman
a cry or noise made to express displeasure or contempt
badminton equipment consisting of a ball of cork or rubber with a crown of feathers
bird (verb) twitterer (verb)
watch and study birds in their natural habitat