rostrum vs soapbox

rostrum and soapbox both are nouns.

Word	Noun	Adjective	Verb	Adverb
rostrum	Yes	No	No	No
soapbox	Yes	No	No	No

As nouns, rostrum and soapbox are synonyms defined as:

rostrum and soapbox: a platform raised above the surrounding level to give prominence to the person on it

Other synonyms of rostrum include ambo, dais, podium, pulpit, stump.

rostrum (noun)	soapbox (noun)
beaklike projection of the anterior part of the head of certain insects such as e.g. weevils	a platform raised above the surrounding level to give prominence to the person on it
a platform raised above the surrounding level to give prominence to the person on it	a crate for packing soap