Ask HN: Is there a concept to icon mapping dictionary?

Has anyone created a list of mappings for common concepts to standard icons (font awesome / bootstrap etc)? For example if I want an icon to represent the idea of "settings" then I know that commonly maps to "wrench". However, I often find myself unable to easily make that connection, or wishing there was an agreed standard.

An example of one that is a bit more obscure would be the concept "type". If I want an icon that indicates the idea of "type" or "category" what would I use? Perhaps a mixed gender icon?