What do these verdicts in the reporting section of Web Security Service mean?

Here are some of the most common verdicts that are seen in reporting and their meanings:

• Allowed: Site was allowed. This means that the site that the user has accessed is currently an approved site for the user to navigate to it.
• Policy Denied: The site was blocked due to a policy decision made based on your current Content Filtering rules
• No Verdict: For more information, see ThreatPulse Content Filtering Reports - No Verdict.
• Certificate Category Denied: One of the domains on "Subject Alternative Names" on the SSL certificate was blocked due to content categorization. 
• Inbound Spyware: Inbound spyware was detected and was blocked.
• Outbound Spyware: Outbound spyware was detected and was blocked.
• Unrated Executable: The executable is not rated and was blocked.