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.
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Question: Sentence1: Warm temperatures have helped plant growth and sizing. 
Sentence2: a greenhouse helps  plant growth.

Answer: growth


Question: Sentence1: Mating is generally preceded by courtship. 
Sentence2: Mating is generally similar across species.

Answer: Mating


Question: Sentence1: Centrioles are organelles involved in cell division. 
Sentence2: Basal bodies are involved in cell division.

Answer:
cell