sweetwood bark vs bark

sweetwood bark and bark both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweetwood bark	Yes	No	No	No
bark	Yes	No	Yes	No

As nouns, bark is a hypernym of sweetwood bark; that is, bark is a word with a broader meaning than sweetwood bark:

sweetwood bark: aromatic bark of cascarilla; used as a tonic and for making incense
bark: tough protective covering of the woody stems and roots of trees and other woody plants

sweetwood bark (noun)	bark (noun)
aromatic bark of cascarilla; used as a tonic and for making incense	a sailing ship with 3 (or more) masts
	the sound made by a dog
	a noise resembling the bark of a dog
	tough protective covering of the woody stems and roots of trees and other woody plants