Synonyms are words that have the same meaning despite the difference in their words or spellings. Synonyms are, in a way, the different ways by which things are expressed through the use of different words but still contain or express the same meaning.
In the given sentence, the term "revelations" is used to refer to the things said in the Watergate tapes. This word "revelation" is synonymous with disclosures, thereby making them all synonymous with the word "confession".
