In this chapter, the following terms have the meanings indicated. Terms Defined. “Core services” means only the following: Individual, family, and group counseling; Referral and information services; Crisis intervention including activities relating to youth suicide prevention; Substance abuse assessment and referral services; and Informal counseling. “Department” means the Department of Juvenile Services. “Substance abuse” means alcohol and drug abuse. “Bureau” means a youth services bureau, which is a community-based nonresidential program that is established pursuant to Human Services Article, §9-233, Annotated Code of Maryland.