Singular nouns only in form.

Hi!

There are some nouns in English like "clergy/cattle/vermin" that take a plural verb while they are not plural in form.

Can you, please, provide any others?

Thanks!

Quid (BrE)
stone (as unit of weight - BrE)
sheep
fish
deer
​elk

Is there a difference between these nouns and non-countable mass nouns?

OK, are there any others other than "clergy/cattle/vermin/police/people"?

OK, now we have got "clergy/police/vermin/people/cattle/folk/poultry"
Are they any others?