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: wiring requires an electrical conductor. 
Sentence2: Gold is an excellent conductor of electricity.
conductor

Sentence1: the ovaries are used in reproduction. 
Sentence2: Egg released by the ovary.
ovaries

Sentence1: Warmer temperatures increase melting of mountain glaciers and cause ocean water to expand. 
Sentence2: boulders can be formed by Warmer temperatures.

Warmer