sprig vs withy

sprig and withy both are nouns.

Word	Noun	Adjective	Verb	Adverb
sprig	Yes	No	No	No
withy	Yes	No	No	No

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

sprig: a small branch or division of a branch (especially a terminal division); usually applied to branches of the current or preceding year
withy: strong flexible twig

Other hyponyms of sprig include brier, wand, withe.

sprig (noun)	withy (noun)
an ornament that resembles a spray of leaves or flowers	strong flexible twig
a small branch or division of a branch (especially a terminal division); usually applied to branches of the current or preceding year