To answer this question we need to remember a little how DNA works, DNA is coded by 4 nitrogenated bases adenine guanine cytosine and thymine, the regions that code for different characteristics, proteins, and so forth are genes, is organized in triplets of letters that will be transcribed to RNA. ( In the question, those "words" are the mentioned triplets that will create amino acids, and in a group, this will form a protein.)
