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.

[EX Q]: Sentence1: if an object is made of a material then that object has the properties of that material. 
Sentence2: If an object is made of a drug, then that object has the properties of that drug.
[EX A]: made

[EX Q]: Sentence1: Amphibians have permeable skin that easily absorbs substances from the environment. 
Sentence2: permeable skin easily absorbs air to breathe through.
[EX A]: absorbs

[EX Q]: Sentence1: Low latitudes, for instance, receive more heat during the day than stations at high latitudes. 
Sentence2: Differences in solar warming with latitude during the day on the Earth's surface influence global wind patterns.
[EX A]:
day