sitar vs stringed instrument

sitar and stringed instrument both are nouns.

Word	Noun	Adjective	Verb	Adverb
sitar	Yes	No	No	No
stringed instrument	Yes	No	No	No

As nouns, stringed instrument is a hypernym of sitar; that is, stringed instrument is a word with a broader meaning than sitar:

sitar: a stringed instrument of India; has a long neck and movable frets; has 6 or 7 metal strings for playing and usually 13 resonating strings
stringed instrument: a musical instrument in which taut strings provide the source of sound

sitar (noun)	stringed instrument (noun)
a stringed instrument of India; has a long neck and movable frets; has 6 or 7 metal strings for playing and usually 13 resonating strings	a musical instrument in which taut strings provide the source of sound