Learning how to write my own plugins and I am hitting some confusion over the seemingly inconsistent use of these words and phrases. I see them used interchangeably and sometimes the usage seems to be specific (excluding the others)
A few examples:
1. in http://codex.wordpress.org/Settings_API
"You can add new settings fields (basically, an option in the wp_options database table but totally managed for you)"
"NOTE: You MUST register any options you use with add_settings_field()"
2. In http://codex.wordpress.org/Creating_Options_Pages
"match the look and feel of existing WordPress options pages"
There are many, many more. I could cite in and off site.