One of the most obvious differences between the two are the ingredients that are used to create them. Peanut butter comes from peanuts while butter is a dairy product. The way that these two products are created and prepared are also different from each other. The appearance of these two is also different. Butter is usually light in color and may come in bars.
They may also melt easily especially when exposed to heat. Peanut butter is usually placed in jars. There are some peanut butter products that will come with more chemicals as compared to others. More natural peanut butter and butter are recommended for people who would like to focus on their health.