There are several synonyms for the word "choir-leader," including choir director, choral conductor, music director, chorus master, and vocal coach. Each of these terms describes an individual who is responsible for leading and directing a choir or vocal group. A choir director is typically trained in music theory and has experience working with different types of voices and musical styles. A choral conductor is skilled in leading large groups of singers, while a music director may also be responsible for selecting repertoire and coordinating performances. A chorus master is a skilled musician who works closely with individual singers to improve their vocal technique, while a vocal coach provides one-on-one guidance to help singers achieve their full potential.