/sɪˈnɛkdəki/  |  sih-NECK-duh-kee

Aside from being an uglier word to say than look at, a synecdoche is a specific type of metonym where something is referred to by either a component of itself or, conversely, a broader category to which it belongs.  When I call myself a writer, I’m naming one aspect of the process to say that I’m a storyteller.

Other examples:

• I need to find a way to put the slog in irons.  [Referring to shackles by their material]
• Seeking to escape the slog, we entreated the Church to grant us asylum.  [Referring to specific people by the organization they belong to, and that organization by the building it works in]

Synecdoche.  Use it.

Bene scribete.