[yau8edq12i]

There is no such thing as an "SSL certificate" or "TLS certificate". There are certificates, which are used in various protocols including SSL and TLS. You can use the same certificate for both. The name "SSL certificate" is just a shorthand indicating the intended purpose of the certificate, nothing more. As such there really is no point in being pedantic over SSL vs TLS.

[paxys]

More accurately they are X.509 certificates.

[yau8edq12i]

If we want to be pedantic, X.509 mainly defines the binary format of these certificates.