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: Nitrogen is found in proteins, nucleic acids, and chlorophyll. 
Sentence2: Life without protein is impossible.

Answer: proteins


Question: Sentence1: Most people know that the Venus Flytrap is a carnivorous plant. 
Sentence2: The Venus Flytrap has specialized reproductive organs.

Answer: Flytrap


Question: Sentence1: Mollusks live in most terrestrial, freshwater, and marine habitats. 
Sentence2: Interestingly, a squid is also a mollusk.

Answer:
Mollusks