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: Minerals are chemical elements that are essential for body processes. 
Sentence2: Eggs are loaded with vitamins and minerals.

A: Minerals
****
Q: Sentence1: protein is used to repair cells by the human body. 
Sentence2: Meat, fish and chicken are rich sources of protein.

A: protein
****
Q: Sentence1: chemical weathering causes iron in rock to oxidize. 
Sentence2: chemical weathering causes iron in limestone to oxidize.

A:
causes
****