hemp vs hangman's halter

hemp and hangman's halter both are nouns.

Word	Noun	Adjective	Verb	Adverb
hemp	Yes	No	No	No
hangman's halter	Yes	No	No	No

As nouns, hemp and hangman's halter are synonyms defined as:

hemp and hangman's halter: a rope that is used by a hangman to execute persons who have been condemned to death by hanging

Other synonyms of hemp include halter, hangman's rope, hempen necktie.

hemp (noun)	hangman's halter (noun)
a rope that is used by a hangman to execute persons who have been condemned to death by hanging	a rope that is used by a hangman to execute persons who have been condemned to death by hanging
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
a plant fiber