Ensemble and Glee club

Ensemble noun - An assemblage of parts or details (as in a work of art) considered as forming a whole.

Glee club and ensemble are semantically related in collection topic. In some cases you can use "Glee club" instead a noun "Ensemble", when it comes to topics like chorus.

Glee club noun - An organized group of singers.

Ensemble and glee club are semantically related in chorus topic. You can use "Ensemble" instead a noun phrase "Glee club".