如何准确地匹配json汤中的单词？

import json
import re

def match_words_in_json(json_data, word):
    # 解析JSON
    data = json.loads(json_data)

    # 遍历JSON数据
    def traverse(obj):
        if isinstance(obj, dict):
            for key, value in obj.items():
                # 匹配键
                if re.search(r'\b{}\b'.format(word), str(key)):
                    print("Match found in key:", key)
                # 匹配值
                if re.search(r'\b{}\b'.format(word), str(value)):
                    print("Match found in value:", value)
                # 递归遍历
                traverse(value)
        elif isinstance(obj, list):
            for item in obj:
                # 递归遍历
                traverse(item)

    # 开始遍历
    traverse(data)

# 示例JSON数据
json_data = '''
{
    "name": "John Doe",
    "age": 30,
    "address": {
        "street": "123 Main St",
        "city": "New York"
    },
    "hobbies": ["reading", "coding", "gaming"],
    "skills": {
        "programming": ["Python", "Java", "C++"],
        "web": ["HTML", "CSS", "JavaScript"]
    }
}
'''

# 匹配单词
word_to_match = "coding"
match_words_in_json(json_data, word_to_match)