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: Results can be damaging or disastrous. 
Sentence2: Lack of immunization can be damaging or disastrous.

A: damaging
****
Q: Sentence1: Cells are the units of function in living things. 
Sentence2: living things cannot survive without oxygen.

A: living
****
Q: Sentence1: heat can change the state of matter. 
Sentence2: Gas is one of the 3 states of matter.

A:
matter
****