Basic rhythm is defined as the fundamental pattern of regularly recurring sounds or beats in music or speech. However, there are a multitude of synonyms for the term that can provide different shades of meaning. In music, the basic rhythm can also be referred to as the foundation, backbone, or pulse of the composition. Additionally, it can be called the tempo, meter, or time signature - all terms that describe the pace and timing of the music. Similarly, in speech or language, the basic rhythm can be known as the cadence, intonation, or flow. All of these terms help to express the underlying essence of the pattern of sound or movement.