Can a Non-Working Spouse with Only Social Security Income Contribute to an IRA?

In the United States, if a man over 50 retires and has only Social Security income—yet his wife continues to work an earns income in excess of $14,000 can the couple still contribute $14,000 ($7,000 apiece) to either their Traditional or Roth IRAs?

I ask this question because Social Security income is not considered earned income.

I have heard about a "Spousal IRA" but I do not know much about it. Is this a legitimate way for someone to circumvent the typical IRS requirement that one may contribute to an IRA only if there is earned income to offset the contribution—and if so, does one have to open a brand new IRA (i.e., Spousal IRA) to do this or would an existing one suffice?

Any insight that is provided is appreciated.

Thank you.