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: Nuts are also consumed by deer, turkey, foxes, wood ducks and squirrels. 
Sentence2: wood ducks can feed at more than one trophic level.

ducks