diff --git a/docs/data/index.md b/docs/data/index.md
index 57b0f09..27a64f2 100644
--- a/docs/data/index.md
+++ b/docs/data/index.md
@@ -10,40 +10,15 @@ choices, particularly where they might be surprising.
 
 ## Main Concepts
 
-The main concepts are defined below:
-
-Jurisdiction
-   Essentially just another word for "State" in our context. (Includes
-   DC and Puerto Rico.)
-
-Session (aka LegislativeSession)
-   A period of time in a legislature where the same members serve
-   together, typically punctuated by elections. All bills in a session
-   will be uniquely numbered. (e.g. HB 1 in the 2017 session is
-   typically not the same bill as in the 2019 session)
-
-Bill
-   Represents all types of legislation whether it is a bill, resolution,
-   etc.
-
-Vote (aka VoteEvent)
-   A vote among members of the legislature, typically an entire chamber
-   but can also be a committee vote.
-
-Person (aka Legislator)
-   Any person that is associated with the legislature.
-
-Organization
-   A generic term used to represent a few different concepts:
-   legislatures, chambers, committees, and political parties.
-
-Post
-   A particular role within an organization, typically used to represent
-   a seat in the legislature. (e.g. the District 4 post in the North
-   Carolina Senate Organization)
-
-Membership
-   Ties a Person to a Post for a duration of time.
-
-(You'll notice these concepts mostly correspond to the v2 GraphQL root nodes.)
-
+The main concepts are defined below. You'll notice these concepts mostly correspond to the v2 GraphQL root nodes.
+
+|    Concept    |                             Definition                            |
+|:-------------:|:-----------------------------------------------------------------:|
+| **Jurisdiction**  | Essentially just another word for "State" in our context. (Includes DC and Puerto Rico.) |
+|    **Session**    | A period of time in a legislature where the same members serve together, typically punctuated by elections. All bills in a session will be uniquely numbered. (e.g. HB 1 in the 2017 session is typically not the same bill as in the 2019 session) |
+|      **Bill**     | Represents all types of legislation whether it is a bill, resolution, etc. |
+|      **Vote**     | A vote among members of the legislature, typically an entire chamber but can also be a committee vote. |
+|     **Person**    | Any person that is associated with the legislature. |
+|  **Organization** | A generic term used to represent a few different concepts: legislatures, chambers, committees, and political parties. |
+|      **Post**     | A particular role within an organization, typically used to represent a seat in the legislature. (e.g. the District 4 post in the North Carolina Senate Organization) |
+|   **Membership**  | Ties a Person to a Post for a duration of time. |