Freemasons are part of an ancient tradition with rituals and symbols all their own. As a Mason, you can earn degrees, join esoteric and social organizations, and become privy to the language and abbreviations specific to Freemasonry.

The Ancient Accepted Scottish Rite (or the Scottish Rite): Perhaps the most visible and least understood appendant body of Freemasonry, the Scottish Rite isn’t particularly ancient, and it didn’t come from Scotland. The Scottish Rite confers degrees 4 through 32, plus the additional 33rd degree, given for performing great service to Freemasonry or the community. It is technically a concordant body, because some of its degrees continue the story of the building of Solomon’s Temple started in the first three lodge degrees. The Scottish Rite appears in a major role in Dan Brown’s novel (and the 2021 Peacock network streaming series), The Lost Symbol. 

https://www.dummies.com/article/body-mind-spirit/religion-spirituality/freemasonry/freemasons-for-dummies-cheat-sheet-209421/

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