В чем разница между certification（certify） и verification（verify） и identification (identify) ?Пожалуйста, приведите примеры.

To verify means to prove,show or find out that something is correct.
I verified the answers, they are all correct
[I found out the answers, they are all correct]
Please verify that your phone number and address are up to date.
The prosecutor verified the testimony of the witness.

To identify means to find out who someone is or what something is:
The doctor wanted to identify the source of the disease.
[The doctor wanted to find out what the source of the disease was]
When you fly to other countries, you must identify yourself by showing your passport
A trained botanist can identify an unknown plant.

1. To certify means to show that something is the truth or that it is correct.
2. to show that you have met certain requirements, usually in the workforce

Can you certify this document?
[Can you show that this document is correct?]

I'm certified to teach a foreign language
[I'm shown to be able to teach a foreign language]