technique vs brushwork

technique and brushwork both are nouns.

Word	Noun	Adjective	Verb	Adverb
technique	Yes	No	No	No
brushwork	Yes	No	No	No

As nouns, brushwork is a hyponym of technique; that is, brushwork is a word with a more specific, narrower meaning than technique:

technique: skillfulness in the command of fundamentals deriving from practice and familiarity
brushwork: an artist's distinctive technique of applying paint with a brush

Other hyponyms of technique include musketry.

technique (noun)	brushwork (noun)
a practical method or art applied to some particular task	an artist's distinctive technique of applying paint with a brush
skillfulness in the command of fundamentals deriving from practice and familiarity