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: Cancer is a disease in which cells divide out of control. 
Sentence2: Cancer is a disease in which cells grow and divide rapidly.

A: Cancer
****
Q: Sentence1: Some mollusks are nearly microscopic. 
Sentence2: Some squids are nearly microscopic.

A: Some
****
Q: Sentence1: Food consists of organic molecules that store energy in their chemical bonds. 
Sentence2: Something that people want pure consists of organic molecules.

A:
consists
****