Can Idiocy Be a Noun?

noun, plural id·i·o·cies. utterly senseless or foolish behavior; a stupid or foolish act, statement, etc.: All this talk of zombies coming to attack us is pure idiocy.

What does idiocy noun mean?

1 : the condition of being very stupid or foolish. 2 : something very stupid or foolish. idiocy. noun. id·​i·​o·​cy | \ ˈid-ē-ə-sē \

Is idiocy an adjective?

of, relating to, or characteristic of an idiot. senselessly foolish or stupid: an idiotic remark.