I finally grasped the concept of word embedding. Thanks to @nbro, after reading the 2 articles s/he recommended
What Are Word Embeddings for Text? and
the 1st article gives me a good idea about the big picture of the Word Embeddings; whereas the 2nd article is actually the one which clears my mind.
I am an visual person, I understand ...
The specific term you are looking for is "word embedding" and not just "embedding".
How to numerically represent textual data?
Neural networks (typically) require as inputs (and produce as outputs) numerical data (i.e. numbers, vectors, matrices, or higher-dimensional arrays). So, when processing textual data, we first need to encode (or ...