This idea of an article related to street photography using prime lenses (in my case, Fujinon lenses, built by Fujifilm, because I am using a Fujifilm X-T1), just came out during my curation for some street photographs I have made during my journey to the Sunrise Country (Japan).
The word “Bokeh” actually comes from the Japanese word “boke” ボケ, which means “blur”. The “h” at the end was added to emphasize on the correct pronunciation by the English speakers. “Bokeh” refers to the quality and aesthetics of the blurry parts (out of focus areas) in an image, taken by a photographic lens. It is not something you could really mathematically measure, or quantify, but more of an aspect which relates to photographic artistic principles.