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.

Q: Sentence1: Plants that shed their leaves seasonally each year are called deciduous plants. 
Sentence2: vines shed their leaves seasonally each year.

A: each
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Q: Sentence1: smell is used for finding food by some animals. 
Sentence2: Food includes small rodents and birds.

A: food
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Q: Sentence1: Crocodiles, snakes, and lizards are all types of reptiles. 
Sentence2: Crocodiles are a type of tetrapod vertebrates that make amniotic eggs.

A:
Crocodiles
****