What is the distinction between Click Rate and Click-Through Rate (CTR) in HubSpot email reports?

Hello, in these definitions

Click Rate: This is the percentage of people who clicked a link in your email out of the people

who were delivered

your email.
Click Through Rate: This is the percentage of people who clicked a link in your email out of the people

who opened

your email.

I highlighted the font in red where I found the difference in the definitions, however it still isn’t clicking for me. How can someone click a link on an email delivered, but not opened? that’s one in the same to me.

Can anyone hlep clarify?

Sorry if I missed some explaination… thank you!