Fellowships, scholarships, and stipends are disbursed in support of personal research or studies. Such payments are often grouped together, for tax purposes, as "non-service fellowship" income, and may include "reimbursements" for travel or other incurred costs, if not deemed genuine University business expenses, i.e.in direct support of University research or scholarship.
Correctly distinguishing between fellowships and reimbursements has important ramifications for tax withholding and reporting as well as for the actual payment procedure.