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: Iron deficiency Anemia is associated with low levels of the mineral iron in the body. 
Sentence2: iron is a chemical element that is essential for body processes.

Iron