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: electric devices require electrical energy to function. 
Sentence2: Lie detectors are electrical or mechanical devices.
[A]: devices


[Q]: Sentence1: Asbestos is a dangerous carcinogen. 
Sentence2: Asbestos causes cancer.
[A]: Asbestos


[Q]: Sentence1: the looseness of soil has a positive impact on a plant 's roots' growth in that soil. 
Sentence2: Air exchange in the root zone is essential for root growth.
[A]:
growth