Are the Facebook API Key and App Secret the same thing?

Question

I am using a WordPress theme which requires entering an Facebook API key in order to enable comments. I created a new Facebook app, but all it's showing me is an App ID, API version, and an "app secret."

Do I need to enter the app secret in place of the API key?

Answer 1

The API Key is the API ID. The API secret is the API secret.

That theme is using legacy terminology.

Answer 2

The App ID should be your API Key. The App Secret is different. Some plugins I've found require both in separate fields.