Ohr

Hebrew: The Light The endless energy emanating from The Creator. The essence of every object, creature or action in the Universe. The essence of any feel of joy, happiness, bliss or success.

Olam

Hebrew: a world, also, concealed.

Plural, Olamot

Every spiritual level is concealed from the others.

There are five basic worlds – Adam Kadmon, Atsilut, Beri’ah, Yetsira and Asiya, yet those 5 are divided each to five which are divided to five to and so on.