gantlet vs metal glove

gantlet and metal glove both are nouns.

Word	Noun	Adjective	Verb	Adverb
gantlet	Yes	No	No	No
metal glove	Yes	No	No	No

As nouns, gantlet and metal glove are synonyms defined as:

Other synonyms of gantlet include gauntlet.

gantlet (noun)	metal glove (noun)
a form of punishment in which a person is forced to run between two lines of men facing each other and armed with clubs or whips to beat the victim	a glove of armored leather; protects the hand
the convergence of two parallel railroad tracks in a narrow place; the inner rails cross and run parallel and then diverge so a train remains on its own tracks at all times
a glove of armored leather; protects the hand
a glove with long sleeve
to offer or accept a challenge