א־ו־ר

Etymology
The “light” sense of course, in so far as one considers where light could intrude in an ancient house—a —, are related to “cave” and “cavity” senses, which are borne mainly by  in Arabic, although is also related to something bared. To either 🇨🇬, 🇨🇬, 🇨🇬 seem unrelated, although it is plausible that in Hebrew related forms close to the idea of “fire”—also a main source of light—merged into this root.

When the Hebrew and Aramaic verb forms and 🇨🇬 mean “to shine”, these are independent denominatives; the CAL even reckons this particular meaning an error for. Note that is accepted as the Proto-Semitic term for “light” and “fire”; a *ʔūr- or *ʔur-, as it is said, would come from secondary analysis later in the individual languages, there having been a n- derivational prefix barely seen as productive in historical times, say in  or  against  and  (see them).

The “air” sense is denominative from. Also see, a reduplicated extension of the root.

Root

 * 1) related to light, illumination
 * 2) related to dens, caves
 * 3) related to air