hangman's halter vs hempen necktie

hangman's halter and hempen necktie both are nouns.

Word	Noun	Adjective	Verb	Adverb
hangman's halter	Yes	No	No	No
hempen necktie	Yes	No	No	No

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

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

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

hangman's halter (noun)	hempen necktie (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