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.

Sentence1: a flower 's purpose is to produce seeds. 
Sentence2: Every job has meaning and purpose.
purpose

Sentence1: information in an organism 's chromosomes cause genetic traits to be passed down to that organism 's offspring. 
Sentence2: information in Man's chromosomes cause genetic traits to be passed down to offspring.
chromosomes

Sentence1: threatening behavior causes a fight-or-flight response in animals. 
Sentence2: threatening behavior causes stress in animals.

animals