These are all phrases you'll find on most of the food you purchase at the supermarket. It's confusing and especially with kids you don't want to risk eating any foods that might be spoiled. My cousin sent this link to me and I thought it was worthy to pass along. This USDA Food Labeling Fact Sheet provides answers to lots of questions about food safety.
I hope you find it interesting. Here's to keeping us all safe and healthy! (and chocolate is healthy in my book)