Yes, because natural numbers are your counting numbers (1,2,3,4...) Whole numbers are natural numbers and zero (0,1,2,3...) and integers are all of the natural numbers and their opposites and zero...
Although a few old books use "whole number" and "natural number" interchangeably, but common usage is that the natural numbers are N = {1, 2, 3, 4, 5, 6, . . . } and the whole numbers are W = {0, 1,...