talking vs jazz

talking and jazz both are nouns.

Word	Noun	Adjective	Verb	Adverb
talking	Yes	No	No	No
jazz	Yes	No	Yes	No

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

talking (noun)	jazz (noun)
an exchange of ideas via conversation	a genre of popular music that originated in New Orleans around 1900 and developed through increasingly complex styles
	a style of dance music popular in the 1920s; similar to New Orleans jazz but played by large bands
	empty rhetoric or insincere or exaggerated talk

talking (verb)	jazz (verb)
	have sexual intercourse with
	play something in the style of jazz