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: soil is formed by weathering. 
Sentence2: Something described as loamy is formed by weathering.
[EX A]: formed

[EX Q]: Sentence1: harming an animal species causes that animal 's population to decrease. 
Sentence2: Wild animal populations have decreased drastically, due to both hunting and loss of habitat.
[EX A]: animal

[EX Q]: Sentence1: smoking tobacco decreases stamina. 
Sentence2: Tobacco is grown for cigarette factories.
[EX A]:
tobacco