More out of curiosity than out of need, I was just wondering whether it would be possible to have a second-order collective noun for something, e.g.:
One crow becomes
Several crows becomes
A murder of crows becomes
Several murders of crows becomes
No harm done if that's the biggest it can get (a plural of a collective noun). But if it's possible to have something on a larger scale than that, then I'd love to be enlightened!
P.S. I'm not even sure that this would be useful in any way, beyond communicating that there really are a lot of crows!! So if you can think of a useful purpose for a second-order collective noun, it would also be nice to hear that.