God

My shul prints a weekly Shabbat booklet. Most people read the booklet and then discard it. The booklet includes a prayer written in Hebrew. Excerpts from this printed prayer בָּרוּךְ אַתָה אֲדֹנָי אֱ־לֹהִים You have explained to me previously that the hyphen in Elohim allows one to discard the booklet in a respectful manner. My question is about the word Adonai - discard respectfully or bury? Since the booklet and prayer must have been reviewed and approved by our rabbi, I cannot believe that he would allow a word that requires burial. Thanks.  

Hebrew for Elohim אֱלֹהִים אֱ־לֹהִים Is there any difference between the 2 words? What does the hyphen do? If a written document contains either version, can the document be discarded without burial?

Hebrew for Adonai אֲדֹנָי יְיָ יְהוָֹה יהוה Am I correct that all four words are pronounced Adonai? If a written document contains the name of G-d, it should not be discarded; it should be buried. Which of these words would require burial? If not, why not?

I have a version of the Bracha for Sefirot HaOmer. It has Hay Yud in place of Adonai. It has E-LoKEInu in place of EloHEInu. Because of these replacements, the paper does not have to be buried since it does not contain the name of G-d. Could you explain these two replacement words and why neither is the name of G-d? How does one pronounce Hay Yud? Are these replacement words only for writing purposes? Am I correct that I would still say Adonai and Eloheinu during my recitation? Thanks.