monstrance vs ostensorium

monstrance and ostensorium both are nouns.

Word	Noun	Adjective	Verb	Adverb
monstrance	Yes	No	No	No
ostensorium	Yes	No	No	No

As nouns, monstrance and ostensorium are synonyms defined as:

monstrance and ostensorium: (Roman Catholic Church) a vessel (usually of gold or silver) in which the consecrated Host is exposed for adoration

monstrance (noun)	ostensorium (noun)
(Roman Catholic Church) a vessel (usually of gold or silver) in which the consecrated Host is exposed for adoration	(Roman Catholic Church) a vessel (usually of gold or silver) in which the consecrated Host is exposed for adoration
proof by a process of argument or a series of proposition proving an asserted conclusion