A dais is generally a platform higher than floor level enabling people seated or standing on the dais to be seen by the rest of the people in the room, often upon which is set a "head table" and chairs.
A podium is a raised platform (similar to dais).
Strictly speaking, if one person is standing on a raised platform it's a podium, if there's more than one, it's a dais.
Additionally, a 'lectern' is a desk or stand w/ a slanted top used by public speakers. The lectern is placed on the podium.
A rostrum is a platform for one person, whereas a podium is a platform for multiple people.
dais
Either a podium, or a body of ideas a person [usually apolitical candidate ] espouses. It may be called a Dais.
podium
Rostrum,podium or dais.
Podium, dais, chair, head table, stage
A speakers platform will be called different names depending on the scenario. Common names include pulpit, stage, dais and so many more.
A podium is an elevated platform for a lecturer or orchestra conductor, while a lectern is a reading stand for a public speaker
A podium is a raised platform used to elevate someone from his or her surroundings, traditionally to make them stand out on a stage. In this sense, the word "dais" is a synomym. The word podium has ALSO come to mean a stand used to hold papers (for a lecturer, for example) or music (for a conductor, for instance), so, in this sense, the word "lectern" or "music stand" would be synonyms, depending on the cirumstances.
Dais (typography) dash Dais (literary) heap, stack
podium
A dais is a raised platform at the end of a hall. An example sentence would be: Go stand on the dais.
A dais is a platform, however at a sweet 16 a dais is the head table where the birthday girl sits with close friends.