The numbers

$$\; \ldots, -3, -2, -1,0,1,2,3, \ldots \;$$ are integers.
We can place these numbers on the number line.
The numbers to the right of $0$ are $\blue{\text{positive numbers}}$. The numbers to the left of $0$ are $\green{\text{negative numbers}}$. The number $0$ is non-positive and non-negative.