sunburst vs broach

sunburst and broach both are nouns.

Word	Noun	Adjective	Verb	Adverb
sunburst	Yes	No	No	No
broach	Yes	No	Yes	No

As nouns, broach is a hypernym of sunburst; that is, broach is a word with a broader meaning than sunburst:

Other hypernyms of sunburst include breastpin, brooch.

sunburst (noun)	broach (noun)
a jeweled brooch with a pattern resembling the sun	a decorative pin worn by women
a design consisting of a central disk resembling the sun and rays emanating from it
a sudden emergence of the sun from behind clouds

sunburst (verb)	broach (verb)
	bring up a topic for discussion