Natural numbers can be used for counting: just one apple; two apples are one particular apple extra to a different apple, three apples are just one apple added to 2 apples, ... The natural numbers are useful for counting matters, like "there are 6 coins about the table", by which https://buycompletejointcarepack.science.blog/2025/09/03/ayurvedic-medicine-for-lifestyle-disorders-cureayu-solutions/