The fraternity of Freemasonry, also known as "Free and Accepted Masons," is organized into lodges, chapters, councils, commanderies, consistories, etc., which are collectively referred to as Masonic "bodies." The most basic Masonic body is the local "Masonic lodge," which confers the first three degrees in Masonry, being that of Entered Apprentice, Fellowcraft, and Master Mason.
While there is no degree in Freemasonry higher than that of Master Mason, there are a number of related organizations which have as a prerequisite to joining that one be a Master Mason. These include, but are not limited to Scottish Rite, York Rite, and the Shriners.
Additionally, there are also organizations that are affiliated with Freemasonry that admit both Master Masons as well as non-Masons who have some relation to a Master Mason. These include, but are not limited to, the Order of the Eastern Star and the Order of the Amaranth. Still other affiliated organizations like the Order of DeMolay, the International Order of the Rainbow for Girls and others, admit non-Masons and have no requirement that an applicant be related to a Master Mason.