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.
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Question: Sentence1: infection can cause bodily tissues to swell. 
Sentence2: Bacteria can cause bodily tissues to swell.

Answer: bodily


Question: Sentence1: bacteria can cause people to become ill. 
Sentence2: bacteria can cause people to die.

Answer: bacteria


Question: Sentence1: Frogs also have a larynx, or voice box, to make sounds. 
Sentence2: some amphibians have a larynx, or voice box, to make sounds.

Answer:
box