Refutation of the initial answer: it hides so much more than it reveals it can hardly be called Gilui (1).
Words:
Etzem- In relationship with itself (only).
Gilui- to another (and the “other” gets it)
Yesh- INDEPENDENT being.
Ohr- A light that is about reflecting it’s source.
Ha’arah- a light that is about revelation to another. MP3