budgerygah vs paroquet

budgerygah and paroquet both are nouns.

Word	Noun	Adjective	Verb	Adverb
budgerygah	Yes	No	No	No
paroquet	Yes	No	No	No

As nouns, paroquet is a hypernym of budgerygah; that is, paroquet is a word with a broader meaning than budgerygah:

budgerygah: small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors
paroquet: any of numerous small slender long-tailed parrots

Other hypernyms of budgerygah include parakeet, paraquet, parrakeet, parroket, parroquet.

budgerygah (noun)	paroquet (noun)
small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors	any of numerous small slender long-tailed parrots