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: Scales protect fish from predators and parasites and reduce friction with the water. 
Sentence2: Scales protect fish from predators and parasites and allow them to move faster.

predators