What are different between Wildcard SSLs and UCC SSLs

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•Wildcard SSLs cover multiple subdomains. Wildcards are also ideal for intranet configurations. For example, you can secure your internal services using intranet.coolexample.com, and your public-facing website using www.coolexample.com.
•UCC SSLs can cover multiple subdomains, unique domain names, and websites. For example, you can secure www.coolexample.com, mail.coolexample.com, and www.awesomeexample.com.
UCC SSLs represent all secondary domains with the primary business name, so all sites should be related. A UCC site seal displays only the primary domain name as "Issued To," and all secondary websites are listed in the certificate details.