Instructions: 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: disease-causing microbes have a negative impact on the body. 
Sentence2: Pathogens are microbes that cause disease.
Output:
disease-causing