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: Pathogens : a few types of bacteria in food are responsible for causing illness and are referred  to as pathogens. 
Sentence2: Some types of bacteria in food can cause disease.

bacteria