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: Passive immunity lasts only as long as the antibodies survive in body fluids. 
Sentence2: A pregnant woman will pass antibodies to the fetus.
[EX A]: antibodies

[EX Q]: Sentence1: Crops are plants that are grown for food or other uses. 
Sentence2: insects destroy plants.
[EX A]: plants

[EX Q]: Sentence1: Head hair is especially important in preventing heat loss from the body. 
Sentence2: Alopecia Hair loss is referred to as alopecia.
[EX A]:
hair