TASK DEFINITION: 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.
PROBLEM: Sentence1: the Earth being tilted on its rotating axis causes seasons. 
Sentence2: the planet's orbit and tilt causes seasons.

SOLUTION: seasons

PROBLEM: Sentence1: Results can be damaging or disastrous. 
Sentence2: Lack of immunization can be damaging or disastrous.

SOLUTION: damaging

PROBLEM: Sentence1: By the time blood leaves capillaries and flows into veins, pressure has decreased greatly. 
Sentence2: blood pressure decreases after it leaves the arteries.

SOLUTION:
pressure