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

SOLUTION: amount

PROBLEM: Sentence1: boiling means change from a liquid into a gas by adding heat energy. 
Sentence2: boiling changes a liquid into steam.

SOLUTION: liquid

PROBLEM: Sentence1: Sepals are usually green, which camouflages the bud from possible consumers. 
Sentence2: daylilies use camouflauge to protect their buds.

SOLUTION:
camouflages