pyrotechnics vs brilliance

pyrotechnics and brilliance both are nouns.

Word	Noun	Adjective	Verb	Adverb
pyrotechnics	Yes	No	No	No
brilliance	Yes	No	No	No

As nouns, brilliance is a hypernym of pyrotechnics; that is, brilliance is a word with a broader meaning than pyrotechnics:

pyrotechnics: (music) brilliance of display (as in the performance of music)
brilliance: unusual mental ability

Other hypernyms of pyrotechnics include genius.

pyrotechnics (noun)	brilliance (noun)
the craft of making fireworks	a light within the field of vision that is brighter than the brightness to which the eyes are adapted
(music) brilliance of display (as in the performance of music)	the quality of being magnificent or splendid or grand
	unusual mental ability