I am searching the term 'Semantic Query Optimization'. But can't find any specific answer. Can you tell me what actually Semantic means?
Think of it as another way of saying something, usually in a way that's easier to understand.
For example: HTML5 includes semantic tags.
The semantic version of <div id="header"></div>
is simply <header></header>
It's just another way of stating the same thing.
There is a front-end framework known as Semantic UI. In this framework, you can specify a four column row like this <div class="four wide column"></div>
If you're familiar with the Bootstrap framework, you'd know the equivalent to be <div class="col-4"></div>
.
In conclusion, they both do the same thing, but they're stated differently.