instruction:
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.
question:
Sentence1: Mitosis is cell division. 
Sentence2: mitosis often causes growth.
answer:
Mitosis


question:
Sentence1: Sperm pass out of the body through the urethra. 
Sentence2: Sperm travel from the testicles through the vas deferens to the seminal vesicles and the prostate.
answer:
Sperm


question:
Sentence1: Growth is faster during infancy than it is during puberty. 
Sentence2: babies grow faster than they do later during puberty.
answer:

Growth