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.

Sentence1: Fully cooking oysters kills the bacteria. 
Sentence2: Fully cooking oysters can prevent illness.
Fully

Sentence1: a polar bear requires a cold environment. 
Sentence2: polar bears live where there are fewer animals.
bear

Sentence1: If the community works together, it is bound to succeed. 
Sentence2: if populations work together they can succeed.

succeed