Identity Proofing, Identity Verification

I am trying to gain a better understanding of identitiy proofing vs identity verification. So far there are 2 types of identity proofing that I am aware of (from the Security Plus Book)

1) 1a. Identity Proofing - Occurs before an account is setup (such as requiring a physical drivers license to setup a bank account, answering questions about your credit report to setup a new online credit card)
2) 1b. Identity Proofing - Random questions about address or you have lived in the past, bank accounts you have had, previus jobs etc, on a transaction by transaction basis to complete a sensitive operation within a bank account (such as a wire transfer).

Now here is my question, how is identity verification different than the above? I am having a hard time understanding the differences between the two points (proofing and verification).

Thanks,

Robert