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: More trees are cut for firewood and for homes. 
Sentence2: using firewood for homes allows sunlight to become available to the surrounding plants.

homes