iron collar vs garrotte

iron collar and garrotte both are nouns.

Word	Noun	Adjective	Verb	Adverb
iron collar	Yes	No	No	No
garrotte	Yes	No	Yes	No

As nouns, iron collar and garrotte are synonyms defined as:

iron collar and garrotte: an instrument of execution for execution by strangulation

Other synonyms of iron collar include garotte, garrote.

iron collar (noun)	garrotte (noun)
an instrument of execution for execution by strangulation	an instrument of execution for execution by strangulation

iron collar (verb)	garrotte (verb)
	strangle with an iron collar