hemp vs bowstring hemp

hemp and bowstring hemp both are nouns.

Word	Noun	Adjective	Verb	Adverb
hemp	Yes	No	No	No
bowstring hemp	Yes	No	No	No

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

Other hyponyms of hemp include deccan hemp, kenaf, abaca, Manila hemp, Manilla hemp.

hemp (noun)	bowstring hemp (noun)
a rope that is used by a hangman to execute persons who have been condemned to death by hanging	grown as a houseplant for its mottled fleshy sword-shaped leaves or as a source of fiber
any plant of the genus Cannabis; a coarse bushy annual with palmate leaves and clusters of small green flowers; yields tough fibers and narcotic drugs	strong fiber that resembles hemp; obtained from sansevieria and used for e.g. cordage
a plant fiber	hemp obtained from the sansevieria