What’s the difference between SSI and SSDI?

I read a good article recently on the difference between Supplemental Security Income (SSI) and Social Security Disability Income (SSDI). I know most individuals don’t know what they are or what the differences are between them.

Here’s the link to the article:

https://www.disabilitysecrets.com/page5-13.html

If you have any questions please feel free to contact me.