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.
Input: Sentence1: Seasons occur due to the tilt of the Earth's axis and the orbit of the Earth around the Sun. 
Sentence2: The amount of daylight changes based on the tilt of the Earth's axis.

Earth's