You dislike somebody as a choice. You hate somebody on the basis of animosity or enmity. Hate carries unpleasant memories of the past whereas dislike does not carry with it any unpleasant memory. You dislike non-living things. You dislike bananas. You hate living things. You hate your neighbor. You dislike books. You do not hate them. You dislike getting low marks in math. You do not hate getting low marks in math. Hence it is understood that there is a lot of difference between the two words ‘dislike’ and ‘hate’. Both are not interchangeable.