neckerchief vs kerchief

neckerchief and kerchief both are nouns.

Word	Noun	Adjective	Verb	Adverb
neckerchief	Yes	No	No	No
kerchief	Yes	No	No	No

As nouns, kerchief is a hypernym of neckerchief; that is, kerchief is a word with a broader meaning than neckerchief:

neckerchief: a kerchief worn around the neck
kerchief: a square scarf that is folded into a triangle and worn over the head or about the neck

neckerchief (noun)	kerchief (noun)
a kerchief worn around the neck	a square scarf that is folded into a triangle and worn over the head or about the neck