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: We learned about desert plants and how they adapt themselves to the hot dry desert environment so they can survive. 
Sentence2: Desert plants conserve water to survive in the desert.

desert