Write the thoughts expressed by Richard Feynman regarding the difference between interference and diffraction.

(N/A) Richard Feynman noted that almost no one has ever been able to define the difference between interference and diffraction in a completely satisfactory way.
He suggested that it is primarily a matter of usage and terminology,rather than a fundamental physical distinction.
According to his perspective,when we deal with a small number of sources (e.g.,two interfering sources),the resulting phenomenon is typically referred to as interference. Conversely,when we deal with a large number of sources (such as the continuous distribution of wavelets across a slit),the term diffraction is more commonly used.