bromide vs platitude

bromide and platitude both are nouns.

Word	Noun	Adjective	Verb	Adverb
bromide	Yes	No	No	No
platitude	Yes	No	No	No

As nouns, bromide and platitude are synonyms defined as:

Other synonyms of bromide include banality, cliche, commonplace.

bromide (noun)	platitude (noun)
a trite or obvious remark	a trite or obvious remark
any of the salts of hydrobromic acid; formerly used as a sedative but now generally replaced by safer drugs