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: Crops are plants that are grown for food or other uses. 
Sentence2: insects destroy plants.

Answer: plants


Question: Sentence1: Some pelycosaurs gave rise to a group of animals called therapsids. 
Sentence2: Like most other groups of synapsids, all pelycosaurs are now extinct.

Answer: pelycosaurs


Question: Sentence1: a glacier causes mechanical weathering. 
Sentence2: WEATHERING -- Deterioration, decay or damage caused by exposure to the elements.

Answer:
weathering