gaywings vs bird-on-the-wing

gaywings and bird-on-the-wing both are nouns.

Word	Noun	Adjective	Verb	Adverb
gaywings	Yes	No	No	No
bird-on-the-wing	Yes	No	No	No

As nouns, gaywings and bird-on-the-wing are synonyms defined as:

gaywings and bird-on-the-wing: common trailing perennial milkwort of eastern North America having leaves like wintergreen and usually rosy-purple flowers with winged sepals

Other synonyms of gaywings include flowering wintergreen, fringed polygala, Polygala paucifolia.

gaywings (noun)	bird-on-the-wing (noun)
common trailing perennial milkwort of eastern North America having leaves like wintergreen and usually rosy-purple flowers with winged sepals	common trailing perennial milkwort of eastern North America having leaves like wintergreen and usually rosy-purple flowers with winged sepals