Probably what you are looking for is a thesaurus. A glossary is just a list of contents, in alphabetical order.

yes

Usually or sometimes they are put like this: Page 1: Forte -very loud (italian) etc. and then Page 2 Yes. Words would be in alphabetical order in a glossary.

It gives the meaning of words.

In an APA style research paper, the glossary is usually placed at the end of the document, after the reference list. It should be labeled "Glossary" and include definitions of key terms used in the paper in alphabetical order.