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: Heterotrophs get food by eating other living things. 
Sentence2: fish eat other living things.

A: living
****
Q: Sentence1: mountains are formed by earthquakes. 
Sentence2: Mountains are formed by moving plates.

A: are
****
Q: Sentence1: Annelids have the amazing capacity to regrow segments that break off. 
Sentence2: Leeches have the amazing capacity to regrow segments that break off.

A:
amazing
****