Collective Nouns- English Makes No Sense

Collective nouns, what do you mean? Let me present- A gaggle of geese, A moose and some meese, A tuft of grass, And a band of thieves, A fleet of ships, And a flock of sheep A flock of sheep? Well, if the goose is geese, geese are a gaggle, moose is meese, So, why is it not a shoop and a sheep? ENGLISH! I think I might even sue! I will take you to the BENCH of judges, There we will resume! You make a porridge of words In your cauldron of 'sense', Whilst you horridly cackle! Your words need to be observed Under a great big lens!