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: heating an egg causes a chemical reaction in the egg. 
Sentence2: Insects hatch from eggs.

A: egg
****
Q: Sentence1: Moisture is required for the microorganisms to grow. 
Sentence2: Moisture can cause infections to grow.

A: Moisture
****
Q: Sentence1: Crocodilian mothers provide the most parental care compared to any other reptiles. 
Sentence2: Crocodilian mothers provide care to their young.

A:
Crocodilian
****