Reword

README.md

@@ -104,15 +104,15 @@ This part will be done after we complete the `_rev` property refactor.
 
 Unlike relational db or mongodb, Cloudant doesn't have a concept as 'table' or 'collection', data in a Cloudant database are all stored as documents.
 
-The connector uses a design document to represent a Loopback model, and other non-design(non-design might not be the best word here, appreciate more ideas about how to describe it) documents to represent model instances.
+The connector uses a design document to represent a Loopback model, and common documents to represent model instances.
 
 The following is a comparison among different databases:
 
 |               | Model                        | Model Property                        | Model Instance         |
 |---------------|------------------------------|---------------------------------------|------------------------|
 | Relational DB | table                        | column in table                       | row in table           |
 | Mongodb       | collection                   | createIndex if property.index is true | document in collection |
-| Cloudant      | Design documents in database | NOT stored in doc                     | documents in database  |
+| Cloudant      | Design documents in database | NOT stored in document                     | common documents in database  |
 
 To create a model, the connector creates a design document with the following config: