insignia vs wings

insignia and wings both are nouns.

Word	Noun	Adjective	Verb	Adverb
insignia	Yes	No	No	No
wings	Yes	No	No	No

As nouns, wings is a hyponym of insignia; that is, wings is a word with a more specific, narrower meaning than insignia:

insignia: a badge worn to show official position
wings: stylized bird wings worn as an insignia by qualified pilots or air crew members

Other hyponyms of insignia include caduceus, insignia of rank, shoulder flash, hash mark, hashmark, service stripe, cordon.

insignia (noun)	wings (noun)
a badge worn to show official position	a means of flight or ascent
	stylized bird wings worn as an insignia by qualified pilots or air crew members