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: the looseness of soil has a positive impact on a plant 's roots' growth in that soil. 
Sentence2: the looseness of dirt or compost has a positive impact on a plant's roots' growth.

roots'