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: Genetics is the study and application of principles of inheritance to plants and animals . 
Sentence2: Pedigrees are useful tools for studying Genetics.
[A]: Genetics


[Q]: Sentence1: wind is used for producing electricity. 
Sentence2: Winds are caused by pressure differences.
[A]: wind


[Q]: Sentence1: friction causes the temperature of an object to increase. 
Sentence2: chronic impact can cause temperature of an object to increase.
[A]:
increase