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: Nonmetal elements are far fewer in number. 
Sentence2: There are 17 nonmetals on the periodic table.
[EX A]: Nonmetal

[EX Q]: Sentence1: a wildfire changes an ecosystem drastically. 
Sentence2: Forest fires change an ecosystem drastically.
[EX A]: changes

[EX Q]: Sentence1: Farmers grow substance crops to feed their family as well as to sell for cash. 
Sentence2: Insects spread disease and destroy farmer's ability to feed their family.
[EX A]:
Farmers