I think the numbers of the people in the horde depends on the ratio, if there is 1 nit and 5 bish that that's a horde, if there are 4 nits and 5 bith than that's not a horde, if there are 5 nits and 20bish than that's a horde.
Well, u got it right on the spot there, cuz almost all the time is the vHord.. the bishops "team Working" on fields with no defense or just a few.. and we all know that when the bish "team work" is not like 4 or 5 of them... is mostly 20-30 (even more), I can be wrong in here but thats a horde to me
And I know how to work the horde... but even that I hate the horde