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: When plates collide, the earthquake is the result from the collision. 
Sentence2: earthquakes can result in formation of high mountains with well-rounded peaks.

earthquake