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.

[EX Q]: Sentence1: bacteria can cause people to become ill. 
Sentence2: bacteria can cause people to die.
[EX A]: bacteria

[EX Q]: Sentence1: Leeches are external parasites. 
Sentence2: Leeches live on the surface of their hosts.
[EX A]: Leeches

[EX Q]: Sentence1: Bryophytes are fungi and they are the most common moss that people think of. 
Sentence2: Fungi depend on moisture to reproduce.
[EX A]:
fungi