Here are explanations of some of the most commonly used abbreviations and acronyms that are relevant to local efforts to prevent and end homelessness:

AHAR Annual Housing Availability Report
APR Annual Performance Report (Annual Progress Report for homeless programs)
CDBG Community Development Block Grant (CPD Program)
CHDO Community and Housing Development Organization. Non-profit housing provider receiving minimum of 15% of HOME Investment Partnership funds
CoC Continuum of Care approach to assistance to the homeless
Continuum of Care Federal program stressing permanent solutions to Homelessness
Con Plan Consolidated Plan, a locally developed plan for housing assistance and urban development under the Community Development Block Grant and other CPD programs
CPD Community Planning and Development (HUD Office of)
Data Warehouse Information system storing HUD program and operational data
EC Enterprise Communities
ESG Emergency Solutions Grants (CPD program; formerly Emergency Shelter Grants)
Fair Housing Act 1968 act (amended in 1974 and 1988) providing HUD Secretary with fair housing enforcement and
investigation responsibilities
FEMA Federal Emergency Management Administration
FHA Federal Housing Administration (HUD Office of Housing)
FHAP Fair Housing Assistance Program (FHEO program). Program assisting State/local govt with process fair housing complaints.
GPRA Government Performance and Results Act. Requires Federal Agencies to establish performance
standards and report on results.
HEARTH Act Homeless Emergency Assistance and Rapid Transition to Housing Act
HMIS Homeless Management Information System
HOME Home Investment Partnerships (CPD program)
HOPWA Housing Opportunities for Persons with AIDS (CPD program)
HUD U.S. Department of Housing and Urban Development
LIHTC Low Income Housing Tax Credit
MOU Memorandum of Understanding
NOFA (HUD) Notice of Funding Availability
PHA Public Housing Authority
PSH Permanent Supportive Housing
PULSE The Homelessness PULSE project
RFP Request for Proposals. Used to solicit proposals for contracts under the negotiated procurement method.
Section 8 Housing Assistance Payment Program (Housing and Community Development Act of 1974)
Section 202 Loans for construction/rehab of housing for the elderly or handicapped
Section 202/811 Programs for housing assistance to the elderly and people with disabilities
SRO Single-Room Occupancy. Mortgage insurance under Section 221(d) for single room apartments.
Super NOFA HUD’s consolidated approach to issuance of Notices of Funding Availability
TANF Temporary Assistance to Needy Families. Click here for a glossary of terms related to this program.
TDHCA Texas Department of Housing and Community Affairs
VA Veterans Affairs (U.S. Department of)

A more extensive list of abbreviations associated with HUD programs is available here