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

SOLUTION: Balance

PROBLEM: Sentence1: a tape measure is used to measure length. 
Sentence2: Length The Base unit for length in the metric system is the meter .

SOLUTION: length

PROBLEM: Sentence1: Erosion is a substantial contributor to deterioration of soil quality. 
Sentence2: Wind can lead to a deterioration of soil quality.

SOLUTION:
deterioration