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: disease-causing microbes have a negative impact on the body. 
Sentence2: pathogens have a negative impact on the body.
body

Sentence1: Runoff water is wasted water. 
Sentence2: Streams may start with wasted water.
wasted

Sentence1: Too little rain causes a drought. 
Sentence2: Too little rain can change the color of an environment from green to brown.

Too