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: All plants have a characteristic life cycle that includes alternation of generations. 
Sentence2: Plant and animal life cycles are detailed, including birth, growth, reproduction, and death.
includes