headscarf vs babushka

headscarf and babushka both are nouns.

Word	Noun	Adjective	Verb	Adverb
headscarf	Yes	No	No	No
babushka	Yes	No	No	No

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

headscarf: a kerchief worn over the head and tied under the chin
babushka: a woman's headscarf folded into a triangle and tied under the chin; worn by Russian peasant women

Other hyponyms of headscarf include hijab, khimar.

headscarf (noun)	babushka (noun)
a kerchief worn over the head and tied under the chin	a woman's headscarf folded into a triangle and tied under the chin; worn by Russian peasant women