Question

Music: test
Is a choir in a church the same thing as an a cappella group?

1. Yes, these terms are interchangeable.
2. No, choirs always have musical accompaniment.
3. If there are no instruments, a choir could be a cappella.
4. Choirs used to be a cappella, but they are not any more.

Answer 1

2. No, choirs always have musical accompaniment.