TASK DEFINITION: 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.
PROBLEM: Sentence1: Finally, the fluid in the nephron reaches a collecting duct . 
Sentence2: fluid in the kidneys collect into ducts.

SOLUTION: fluid

PROBLEM: Sentence1: Infection is what ultimately leads to death. 
Sentence2: scraping oneself on a contaminated object may cause death.

SOLUTION: death

PROBLEM: Sentence1: Arteries generally carry oxygen-rich blood. 
Sentence2: Arteries and veins are blood vessels.

SOLUTION:
Arteries