The term "real part" is a mathematical concept used to describe the non-imaginary component of a complex number. However, in various contexts, several synonyms can be employed to convey the same concept. The phrase "actual component" is often used interchangeably with "real part" to emphasize the concrete, tangible nature of the numerical value. Additionally, "non-imaginary element" provides a descriptive alternative that puts emphasis on the absence of imaginary properties. Another synonym is "physical portion", which conveys the idea of a measurable and observable aspect of the complex number. Lastly, "authentic segment" can be used to underscore the genuine and fundamental part of the number under consideration.