sewing basket vs workbasket

sewing basket and workbasket both are nouns.

Word	Noun	Adjective	Verb	Adverb
sewing basket	Yes	No	No	No
workbasket	Yes	No	No	No

As nouns, workbasket is a hypernym of sewing basket; that is, workbasket is a word with a broader meaning than sewing basket:

sewing basket: a workbasket in which sewing materials can be stored
workbasket: container for holding implements and materials for work (especially for sewing)

Other hypernyms of sewing basket include workbag, workbox.

sewing basket (noun)	workbasket (noun)
a workbasket in which sewing materials can be stored	container for holding implements and materials for work (especially for sewing)