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: a flower 's purpose is to produce seeds. 
Sentence2: Every job has meaning and purpose.

A: purpose
****
Q: Sentence1: Insulin is a hormone that helps cells absorb sugar from the blood. 
Sentence2: the pancreas produces a hormone that helps cells absorb sugar from the blood.

A: absorb
****
Q: Sentence1: global warming is when worldwide temperature increases. 
Sentence2: Ozone depletion causes global warming.

A:
global
****