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: Nonmetal elements are far fewer in number. 
Sentence2: the 17 elements in the upper right hand corner of the periodic table are far fewer in number.

fewer