front-stall vs testiere

front-stall and testiere both are nouns.

Word	Noun	Adjective	Verb	Adverb
front-stall	Yes	No	No	No
testiere	Yes	No	No	No

As nouns, front-stall and testiere are synonyms defined as:

front-stall and testiere: medieval plate armor to protect a horse's head

Other synonyms of front-stall include chamfron, chanfron, frontstall.

front-stall (noun)	testiere (noun)
medieval plate armor to protect a horse's head	medieval plate armor to protect a horse's head