What`s the difference between Social sercurity and Disability payments?

I hear so many people say they tried out for social sercurity and others say disability is there a difference and does one pay more than the other? I got laid off my job the first of the year and have been putting in applications like crazy online I wonder is it even worh it ,I am eligible for unemployment plus I receive a so call severance package (something is better than nothing)I still want to work desperately despite being limited to mobility at times, I am applying for desk jobs like data analysis or computer programming most of those jobs want you to work from home so they don't have to pay you benefits Those work at home jobs they want you to pay money to join and you don't know if it is a scam or not. Cobra I hear is very exspensive.