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: Specialization occurs when competing species evolve different adaptations. 
Sentence2: evolving different adaptations increases survival.

Answer: adaptations


Question: Sentence1: Contact with infected blood, contaminated needles. 
Sentence2: scraping oneself on an infected needle may cause infection.

Answer: infected


Question: Sentence1: Amphibians have permeable skin that easily absorbs substances from the environment. 
Sentence2: amphibians easily absorb chemicals.

Answer:
Amphibians


