The query type defines GraphQL operations that retrieve data from the server.

The mutation type defines GraphQL operations that change data on the server.

Objects are the building blocks of GraphQL APIs. They represent the resources that can be accessed via the API.

Interfaces are abstract types that can be implemented by other objects.

Enums represent possible sets of values for a field.

An Input Object defines a set of input fields; the input fields are either scalars, enums, or other input objects.

Scalars represent primitive data types that can be returned from a GraphQL API.