cockateel vs parrot

cockateel and parrot both are nouns.

Word	Noun	Adjective	Verb	Adverb
cockateel	Yes	No	No	No
parrot	Yes	No	Yes	No

As nouns, parrot is a hypernym of cockateel; that is, parrot is a word with a broader meaning than cockateel:

cockateel: small grey Australian parrot with a yellow crested head
parrot: usually brightly colored zygodactyl tropical birds with short hooked beaks and the ability to mimic sounds

cockateel (noun)	parrot (noun)
small grey Australian parrot with a yellow crested head	usually brightly colored zygodactyl tropical birds with short hooked beaks and the ability to mimic sounds
	a copycat who does not understand the words or acts being imitated

cockateel (verb)	parrot (verb)
	repeat mindlessly