silk stocking vs stocking

silk stocking and stocking both are nouns.

Word	Noun	Adjective	Verb	Adverb
silk stocking	Yes	No	No	No
stocking	Yes	No	No	No

As nouns, stocking is a hypernym of silk stocking; that is, stocking is a word with a broader meaning than silk stocking:

silk stocking: women's stockings made from a sheer material (nylon or rayon or silk)
stocking: close-fitting hosiery to cover the foot and leg; come in matched pairs (usually used in the plural)

silk stocking (noun)	stocking (noun)
women's stockings made from a sheer material (nylon or rayon or silk)	the activity of supplying a stock of something
	close-fitting hosiery to cover the foot and leg; come in matched pairs (usually used in the plural)