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.

Sentence1: Balance is the ability to sense and maintain body position. 
Sentence2: Another part of the inner ear is used for balance.
Balance

Sentence1: soil is formed by weathering. 
Sentence2: Something described as loamy is formed by weathering.
formed

Sentence1: infection can cause bodily tissues to swell. 
Sentence2: An infection can cause edema.

can