vastly less: ((-11)nch(x)<>(-9)nch(x))
vastly more: (9nch(x)<>11nch(x))
far less: ((-9)nch(x)<>(-7)nch(x))
far more: (7nch(x)<>9nch(x))
much less: ((-7)nch(x)<>(-5)nch(x))
much more: (5nch(x)<>7nch(x))
less: ((-5)nch(x)<>(-3)nch(x))
more: (3nch(x)<>5nch(x))
slightly less: ((-3)nch(x)<>(-1)nch(x))
slightly more: (1nch(x)<>3nch(x))
approximately equal: ((-1)nch(x)<>1nch(x))
