thicket vs brushwood

thicket and brushwood both are nouns.

Word	Noun	Adjective	Verb	Adverb
thicket	Yes	No	No	No
brushwood	Yes	No	No	No

As nouns, thicket and brushwood are synonyms defined as:

Other synonyms of thicket include brush, coppice, copse.

thicket (noun)	brushwood (noun)
a dense growth of bushes	a dense growth of bushes
	the wood from bushes or small branches