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: Smoking accelerates the aging process. 
Sentence2: smoking accelerates the death of cells.

SOLUTION: Smoking

PROBLEM: Sentence1: Some mollusks are nearly microscopic. 
Sentence2: Some squids are nearly microscopic.

SOLUTION: Some

PROBLEM: Sentence1: decomposition increases the amount of nutrients in the soil. 
Sentence2: decomposition increases the amount of cations.

SOLUTION:
amount