Lets look at this one by one.

Events : An event is what starts or initiates a workflow. Events can also be used to manage the TIMING of actions within a workflow, such as waiting for the status of an item to change.

There are three events that can start a workflow:

• An item is created.
• An item is changed.
• A workflow participant clicks a start button on the SHAREPOINT site.

Actions: An action is the most basic UNIT of work in a workflow. SharePoint Designer 2010 provides a set of ready-made, reusable actions for you to incorporate into your workflow.

For example, your workflow can:

• Create, copy, change, or delete list items (including documents).
• Check items in or out.
• Send an e-mail message.

CONDITIONS – When you design a workflow, you can use the workflow editor to create rules that apply conditional logic to SharePoint sites, lists, items and content types. A rule establishes a CONDITION where the workflow performs the associated action only if that condition is true. For example, you can create a rule where the workflow sends a reviewer an e-mail message only if an item is created by a specific person.

Lets look at this one by one.

Events : An event is what starts or initiates a workflow. Events can also be used to manage the timing of actions within a workflow, such as waiting for the status of an item to change.

There are three events that can start a workflow:

Actions: An action is the most basic unit of work in a workflow. SharePoint Designer 2010 provides a set of ready-made, reusable actions for you to incorporate into your workflow.

For example, your workflow can:

Conditions – When you design a workflow, you can use the workflow editor to create rules that apply conditional logic to SharePoint sites, lists, items and content types. A rule establishes a condition where the workflow performs the associated action only if that condition is true. For example, you can create a rule where the workflow sends a reviewer an e-mail message only if an item is created by a specific person.