I have researched keywords for posts' titles but my list has some duplicate keywords. If one keyword can be relevant for one post's title, so can be another, because same item is for sale with little feature differences. If i have same title in 2 or more posts, will that be considered as duplicate content? Or Google only looks in body for sake of determining duplicate content? I want professional answers only. Please do not post if your aim is to increase your post count. Thanks.