给定一篇英文文章和一个词汇，输出该词汇在文章中出现的次数。


文章:New research has found that taking regular walks in nature can help reduce stress and improve overall well-being. The study, published in the journal Frontiers in Psychology, asked participants to walk three times a week for 30 minutes in a park or other nature location. The results showed that participants’ stress levels decreased and their overall mood improved after just three weeks of the 12-week study.词汇: nature
The word "nature" appears 3 times in the given article.