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 Q]: Sentence1: disease-causing microbes have a negative impact on the body. 
Sentence2: pathogens have a negative impact on the body.
[EX A]: body

[EX Q]: Sentence1: If there is no movement friction is zero. 
Sentence2: Movement causes the temperature of an object to increase.
[EX A]: movement

[EX Q]: Sentence1: Bile reduces the acidity of food entering from the highly acidic stomach. 
Sentence2: Bile acts as a base on the food entering the stomach.
[EX A]:
Bile