Why is ASM a "low-level" language?
Assembly is called a low-level programming language because there's (nearly) a one-to-one relationship between what it tells the computer to do, and what the computer does. In general, one line of an assembly program contains a maximum of one instruction for the computer.
How is ASM different from a "high-level" language?
High-level languages provide abstractions of low-level operations which allow the programmer to focus more on describing what they want to do, and less on how it should be done. Programming this way is more convenient and makes programs easier to read at the sacrifice of low-level control.
Programs written in high-level languages will never match the raw speed and efficiency of programs written in assembly. Examples of high-level languages include Python, Java, JavaScript, Clojure, and Lisp.
