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: Boiling water can cause burns. 
Sentence2: heating water can cause burns.
water

Sentence1: healing requires rest. 
Sentence2: healing requires time.
healing

Sentence1: Molecules of DNA are encoded with instructions that tell cells what to do. 
Sentence2: Each person inherits DNA on conception.

DNA