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: Roundworms make up the phylum Nematoda. 
Sentence2: Also, nematoda and rotifera are important groups contributing to soils.

Answer: Nematoda


Question: Sentence1: Vesicle transport requires energy, so it is also a form of active transport. 
Sentence2: Vesicle transport requires energy for movement of substances against a chemical gradient.

Answer:
Vesicle