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: Astroglial cells are the most common cells in brain tissue. 
Sentence2: astroglial cells die if their oxygen supply is cut off.

Astroglial