budgerigar vs lovebird

budgerigar and lovebird both are nouns.

Word	Noun	Adjective	Verb	Adverb
budgerigar	Yes	No	No	No
lovebird	Yes	No	No	No

As nouns, budgerigar and lovebird are synonyms defined as:

budgerigar and lovebird: small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors

budgerigar (noun)	lovebird (noun)
small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors	small African parrot noted for showing affection for their mates
	small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors