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: Most pituitary hormones control other endocrine glands. 
Sentence2: Hormones tell the ovaries to produce eggs.

A: hormones
****
Q: Sentence1: if humans disturb animals in a location then those animals will move to a different location. 
Sentence2: The human being is self-aware.

A: humans
****
Q: Sentence1: tectonic plates being pushed together causes earthquakes. 
Sentence2: An earthquake hits San Francisco causing major damage.

A:
earthquakes
****