wagtail vs oscine

wagtail and oscine both are nouns.

Word	Noun	Adjective	Verb	Adverb
wagtail	Yes	No	No	No
oscine	Yes	Yes	No	No

As nouns, oscine is a hypernym of wagtail; that is, oscine is a word with a broader meaning than wagtail:

wagtail: Old World bird having a very long tail that jerks up and down as it walks
oscine: passerine bird having specialized vocal apparatus

Other hypernyms of wagtail include oscine bird.

wagtail (noun)	oscine (noun)
Old World bird having a very long tail that jerks up and down as it walks	passerine bird having specialized vocal apparatus

wagtail (adjective)	oscine (adjective)
	of or relating to the songbirds