Is it true that the word "oration" can be used only to refer to speeches given at funerals?
No, it is not true. An "oration" is usually given on a ceremonial occasion. It needn't be something that is given only when someone dies. An oration is a public speech given by an individual who is generally well-known. The speech tends to be formal in nature. The subject matter chosen tends to be serious and the language used is very formal.
Here are a few examples.
* The Minister gave an oration on the importance of not smoking.
* I attended a lengthy funeral oration, and boy, was it boring.
• The audience listened to the Professor's skilled oration.
The stress, by the way, is on the second syllable "ra".
COURTESY : The Hindu (The National News-Paper) - India