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.

Sentence1: a magnet moving in a coil of copper wire can cause an electric current. 
Sentence2: An electric current forms when a magnet is run through an induction coil.
current

Sentence1: Some viruses live in a dormant state inside the body. 
Sentence2: a virus can live in the brain.
viruses

Sentence1: Macroevolution occurs over geologic time above the level of the species. 
Sentence2: Macroevolution is simply microevolution extrapolated over longer periods of time.

Macroevolution