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.

Ex Input:
Sentence1: disease-causing microbes have a negative impact on the body. 
Sentence2: pathogens have a negative impact on the body.

Ex Output:
body


Ex Input:
Sentence1: Warm temperatures have helped plant growth and sizing. 
Sentence2: a greenhouse helps  plant growth.

Ex Output:
growth


Ex Input:
Sentence1: Among the most destructive types of debris flows are those that accompany volcanic eruptions. 
Sentence2: tectonic plate movement can lead to debris flows.

Ex Output:

debris