Highlighted difference between query params (#158)

Author: Parrryy

guides/v3.4.0/routing/query-params.md

@@ -11,6 +11,11 @@ into the URL that can't otherwise fit into the _path_ of the URL (i.e.
 everything to the left of the `?`). Common use cases for query params include
 representing the current page number in a paginated collection, filter criteria, or sorting criteria.
 
+In web development, query parameters are used within a URL as described above but can also be used
+in API requests that retrieve data. Ember treats these as _two_ different concepts. This section
+describes how routing query parameters are used in Ember. See [finding records](../../models/finding-records/#toc_querying-for-multiple-records) to see how query parameters are
+applied to API requests in Ember Data.
+
 ### Specifying Query Parameters
 
 Query params are declared on route-driven controllers. For example, to