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