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: waxy leaves are used for storing water by some plants. 
Sentence2: Leaves are covered with a cuticle which are used to store water in plants.

storing