anteater vs monotreme

anteater and monotreme both are nouns.

Word	Noun	Adjective	Verb	Adverb
anteater	Yes	No	No	No
monotreme	Yes	No	No	No

As nouns, monotreme is a hypernym of anteater; that is, monotreme is a word with a broader meaning than anteater:

anteater: a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia
monotreme: the most primitive mammals comprising the only extant members of the subclass Prototheria

Other hypernyms of anteater include egg-laying mammal.

As nouns, monotreme is a hypernym of anteater; that is, monotreme is a word with a broader meaning than anteater:

anteater: a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to New Guinea
monotreme: the most primitive mammals comprising the only extant members of the subclass Prototheria

Other hypernyms of anteater include egg-laying mammal.

anteater (noun)	monotreme (noun)
any of several tropical American mammals of the family Myrmecophagidae which lack teeth and feed on ants and termites	the most primitive mammals comprising the only extant members of the subclass Prototheria
nocturnal burrowing mammal of the grasslands of Africa that feeds on termites; sole extant representative of the order Tubulidentata
a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to Australia
a burrowing monotreme mammal covered with spines and having a long snout and claws for hunting ants and termites; native to New Guinea
toothless mammal of southern Africa and Asia having a body covered with horny scales and a long snout for feeding on ants and termites
small Australian marsupial having long snout and strong claws for feeding on termites; nearly extinct