Definition: Generate an overlapping word between the given two sentences. When you find the overlapping words, they don't have to match exactly, e.g., "survival" and "survive" are valid overlapping words. Little words like "the" or "of" don't count! You must generate significant words which are not the stop words.
Input: Sentence1: if food is not immediately used by the body for energy then that food will be stored for future use. 
Sentence2: if food is not immediately used for energy then that food will be converted into fat.

used