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: wind is used for producing electricity. 
Sentence2: Wind is caused because of pressure differences in the atmosphere.
[EX A]: wind

[EX Q]: Sentence1: Faster metabolism means more calories consumed, and usually, weight loss. 
Sentence2: mammals generate heat by consuming calories.
[EX A]: calories

[EX Q]: Sentence1: Male dogs use pheromones in urine to mark their territory. 
Sentence2: Generally, pheromones are volatile substances.
[EX A]:
pheromones