Drupal 7: How to insert or embed a webform and block into a node or content type

To insert or embed a webform, whether as a block, field display or another webform node in any content item node without any coding, any of the following options can work:

Entity Reference

• Install and enable entity reference
• Under Manage Fields, create a field as an entity reference type
  
• Under Entity Selection, choose Simple, then check/select on Webform
  
• Under Manage Display, select format Rendered Entity
  
• Create your Webform (Add Content Item), then save
• Create your Content Item (where the webform node will be inserted), then select the webform from the dropdown list provided by the entity reference field
  

Webform Enable Per Content Type

• Edit your content type, then enable Webform
  
   
• Create or Edit your Content Item (Webform tab is now available)
  
   
• Click on the Webform tab, then create and save your webform node 
  

Insert Block

(less recommended due to known security issues)

• Install and enable Insert Block module
• Create your Webform node
• Under Advanced settings enable webform as a block
• Before you can use the insert block functionality, you have to enable or allow this for your editor by going to Text Formats > Full or Advanced > Configure > Enable Filters > select to enable Insert blocks
  
• Create / Edit your content item, then for example to insert the webform block within the Body field, use the shortcode format as provided by the module

  [block:name of module=delta of block]