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: Consumers are heterotrophs that feed on tissues of other organisms. 
Sentence2: Heterotrophs may eat other organisms at more than one trophic level.

organisms