<p>I’m not sure if my answer is exactly what you are looking for, but there is another distinction between degrees considered to be “Masters of Science”. </p>
<p>One of the distinctions that I have seen is that a Masters of Science in Engineering requires the completion of a BS Engineering in the same field, or equivalent. </p>
<p>A quick Google search leads to some results which verify the distinction I made: “A candidate for the Master of Science in Engineering (Mechanical Engineering) degree must meet the requirements for the Bachelor of Science in Engineering (Mechanical Engineering) degree at this campus, or the essential equivalent to these requirements.” This was one of the first results, and is from UMD. </p>
<p>It is also known as a designated degree. A designated degree has a specific title and a formalized set of courses that must be met. A Masters of Science is called an undesignated degree, and has a slightly less formalized set of courses that need to be taken.</p>