The genetic code consists of <u>three</u> letter “words.”
Explanation:
I'm assuming this was what you're looking for. These "words" are known as codons: for example, AUG stands for the methionine amino acid, so that triplet of nucleotide bases leads to the Met amino acid being added to the final protein.
The process of photosynthesis converts light energy into stored chemical energy by converting carbon dioxide plus water into sugars plus released oxygen.