Budgerigar and Parrakeet

Budgerigar noun - Small Australian parakeet usually light green with black and yellow markings in the wild but bred in many colors.

Parrakeet and budgerigar are semantically related. In some cases you can use "Parrakeet" instead a noun "Budgerigar".

Parrakeet noun - Any of numerous small slender long-tailed parrots.

Budgerigar and parrakeet are semantically related. Sometimes you can replace term "Budgerigar" with "Parrakeet", this nouns are similar.