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.
--------
Question: Sentence1: hiding can be used for avoiding predators. 
Sentence2: Camouflage is used for avoiding predators.

Answer: avoiding


Question: Sentence1: Proper digestion is vital for nutrient absorption. 
Sentence2: Digestion is important for an animal's survival.

Answer: digestion


Question: Sentence1: Plants that have adapted by altering their physical structure are called xerophytes . 
Sentence2: Xerophytes change their physical structure to adapt to dry environments.

Answer:
adapted