No yorktown, he is talking about what type of credit it is (refundable, or non-refundable):
Tax credits may be characterized as either refundable or non-refundable, or equivalently non-wastable or wastable.
Refundable or non-wastable tax credits can reduce the tax owed below zero, and result in a net payment to the taxpayer beyond their own payments into the tax system, appearing to be a moderate form of negative income tax. Examples of refundable tax credits include the earned income tax credit and the additional child tax credit.
A non-refundable or wastable tax credit cannot reduce the tax owed below zero, and hence cannot cause a taxpayer to receive a refund in excess of their payments into the tax system.
To answer the OP's question, both of these are non-refundable tax credits.
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