bow-tie vs white tie

bow-tie and white tie both are nouns.

Word	Noun	Adjective	Verb	Adverb
bow-tie	Yes	No	No	No
white tie	Yes	No	No	No

As nouns, white tie is a hyponym of bow-tie; that is, white tie is a word with a more specific, narrower meaning than bow-tie:

Other hyponyms of bow-tie include black tie.

bow-tie (noun)	white tie (noun)
a man's tie that ties in a bow	bow tie worn as part of a man's formal evening dress
	formalwear consisting of full evening dress for men