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: Secondary accidents are a major problem under driving conditions of reduced visibility. 
Sentence2: Bad weather increases the risk of car accidents.
[EX A]: Secondary

[EX Q]: Sentence1: After a seed is planted it is watered. 
Sentence2: seeds need water.
[EX A]: seed

[EX Q]: Sentence1: Earthworms are important deposit feeders that help form and enrich soil. 
Sentence2: Earthworms ingest sediment to get food particles which enriches soil.
[EX A]:
Earthworms