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bird vs archaeornis archaeornis vs bird

bird and archaeornis both are nouns.

bird is a verb but archaeornis is not a verb.

As nouns, archaeornis is a hyponym of bird; that is, archaeornis is a word with a more specific, narrower meaning than bird and archaeornis is a type of bird with the definitions:
  • warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings
bird (noun) archaeornis (noun)
warm-blooded egg-laying vertebrates characterized by feathers and forelimbs modified as wings extinct primitive toothed bird with a long feathered tail and three free clawed digits on each wing
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) archaeornis (verb)
watch and study birds in their natural habitat