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.

[Q]: Sentence1: smell is used for finding food by some animals. 
Sentence2: Food includes small rodents and birds.
[A]: food


[Q]: Sentence1: Plants exhibit phototropism, or growing toward a light source. 
Sentence2: Bamboos are vigorous, rugged plants.
[A]: Plants


[Q]: Sentence1: Absorption of nutrients occurs mainly in the small intestine. 
Sentence2: Diarrhea reduces funtcion that occurs mainly in the small intestine.
[A]:
intestine