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.
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Question: Sentence1: cell division often causes growth. 
Sentence2: Mitosis is cell division.

Answer: cell


Question: Sentence1: All monkeys are mammals. 
Sentence2: monkeys conserve body heat with their hair or fur.

Answer: monkeys


Question: Sentence1: Crab spiders spin no webs. 
Sentence2: a web is a tool to capture food.

Answer:
webs