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: Cinnamon sticks are simply pieces of tree bark. 
Sentence2: Woody stems are sometimes covered by material used to make cinnamon sticks.

sticks