Address PR feedback

Author: robrichard

spec/Section 3 -- Type System.md

@@ -2211,9 +2211,9 @@ directive @defer(
 
 The `@defer` directive may be provided on a fragment spread or inline fragment
 to indicate that execution of the related selection set should be deferred. When
-a request includes the `@defer` directive, the result may consist of multiple
-responses: the initial response containing all non-deferred data, while
-subsequent responses include deferred data.
+a request includes the `@defer` directive, it may return an _incremental stream_
+consisting of an _initial response_ containing all non-deferred data, followed
+by one or more _subsequent payloads_ including the deferred data.
 
 The `@include` and `@skip` directives take precedence over `@defer`.
 
@@ -2238,11 +2238,11 @@ fragment someFragment on User {
   related note below). When `false`, fragment must not be deferred. Defaults to
   `true` when omitted.
 - `label: String` - An optional string literal (variables are disallowed) used
-  by GraphQL clients to identify data from responses and associate it with the
-  corresponding defer directive. If provided, the GraphQL service must include
-  this label in the corresponding pending object within the response. The
-  `label` argument must be unique across all `@defer` and `@stream` directives
-  in the document.
+  by GraphQL clients to identify data in the _incremental stream_ and associate
+  it with the corresponding defer directive. If provided, the GraphQL service
+  must include this label in the corresponding pending object within the
+  _incremental stream_. The `label` argument must be unique across all `@defer`
+  and `@stream` directives in the document.
 
 ### @stream
 
@@ -2256,7 +2256,7 @@ directive @stream(
 
 The `@stream` directive may be provided for a field whose type incorporates a
 `List` type modifier. The directive enables returning a partial list initially,
-followed by additional items in subsequent responses. Should the field type
+followed by additional items in subsequent payloads. Should the field type
 incorporate multiple `List` type modifiers, only the outermost list is streamed.
 
 Note: The mechanism through which items are streamed is implementation-defined
@@ -2277,37 +2277,37 @@ query myQuery($shouldStream: Boolean! = true) {
 
 #### @stream Arguments
 
-- `initialCount: Int! = 0` - The number of list items to include initially. If
-  omitted, defaults to `0`. A field error will be raised if the value of this
-  argument is less than `0`. When the size of the list is greater than or equal
-  to the value of `initialCount`, the GraphQL service _must_ initially include
-  at least as many list items as the value of `initialCount` (see related note
-  below).
+- `initialCount: Int! = 0` - The number of list items to include initially when
+  completing the parent selection set. If omitted, defaults to `0`. A field
+  error will be raised if the value of this argument is less than `0`. When the
+  size of the list is greater than or equal to the value of `initialCount`, the
+  GraphQL service _must_ initially include at least as many list items as the
+  value of `initialCount` (see related note below).
 - `if: Boolean! = true` - When `true`, field _should_ be streamed (see related
   note below). When `false`, the field must behave as if the `@stream` directive
   is not present—it must not be streamed and all of the list items must be
   included. Defaults to `true` when omitted.
 - `label: String` - An optional string literal (variables are disallowed) used
-  by GraphQL clients to identify data from responses and associate it with the
-  corresponding stream directive. If provided, the GraphQL service must include
-  this label in the corresponding pending object within the response. The
-  `label` argument must be unique across all `@defer` and `@stream` directives
-  in the document.
+  by GraphQL clients to identify data in the _incremental stream_ and associate
+  it with the corresponding stream directive. If provided, the GraphQL service
+  must include this label in the corresponding pending object within the
+  _incremental stream_. The `label` argument must be unique across all `@defer`
+  and `@stream` directives in the document.
 
 Note: The
 [Defer And Stream Directive Labels Are Unique](#sec-Defer-And-Stream-Directive-Labels-Are-Unique)
 validation rule ensures uniqueness of the values passed to `label` on both the
 `@defer` and `@stream` directives. Variables are disallowed in the `label`
 because their values may not be known during validation.
 
-Note: The ability to defer and/or stream parts of a response can have a
-potentially significant impact on application performance. Developers generally
-need clear, predictable control over their application's performance. It is
-highly recommended that GraphQL services honor the `@defer` and `@stream`
-directives on each execution. However, the specification allows advanced use
-cases where the service can determine that it is more performant to not defer
-and/or stream. Therefore, GraphQL clients _must_ be able to process a response
+Note: The ability to defer and/or stream data can have a potentially significant
+impact on application performance. Developers generally need clear, predictable
+control over their application's performance. It is highly recommended that
+GraphQL services honor the `@defer` and `@stream` directives on each execution.
+However, the specification allows advanced use cases where the service can
+determine that it is more performant to not defer and/or stream. Therefore,
+GraphQL clients _must_ be able to process a _response_ or _incremental stream_
 that ignores individual `@defer` and/or `@stream` directives. This also applies
 to the `initialCount` argument on the `@stream` directive. Clients must be able
-to process a streamed response that contains more initial list items than what
-was specified in the `initialCount` argument.
+to process a streamed field result that contains more initial list items than
+what was specified in the `initialCount` argument.