bulldog ant vs pismire

bulldog ant and pismire both are nouns.

Word	Noun	Adjective	Verb	Adverb
bulldog ant	Yes	No	No	No
pismire	Yes	No	No	No

As nouns, pismire is a hypernym of bulldog ant; that is, pismire is a word with a broader meaning than bulldog ant:

bulldog ant: any of the large fierce Australian ants of the genus Myrmecia
pismire: social insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers

Other hypernyms of bulldog ant include ant, emmet.

bulldog ant (noun)	pismire (noun)
any of the large fierce Australian ants of the genus Myrmecia	social insect living in organized colonies; characteristically the males and fertile queen have wings during breeding season; wingless sterile females are the workers