diff --git a/bot/data.py b/bot/data.py
index 9415eaa..291a9c9 100644
--- a/bot/data.py
+++ b/bot/data.py
@@ -7,7 +7,7 @@ from pathlib import Path
 from platformdirs import user_config_dir
 
 
-def config():
+def load_config():
     config_dir = user_config_dir("jitenbot")
     if not Path(config_dir).is_dir():
         os.makedirs(config_dir)
@@ -16,25 +16,25 @@ def config():
         with open(config_file, "r") as f:
             config = json.load(f)
     else:
-        config = __default_config()
+        config = __load_default_config()
         with open(config_file, "w") as f:
             json.dump(config, f, indent=4)
     return config
 
 
-def yomichan_inflection_categories():
+def load_yomichan_inflection_categories():
     file_name = "yomichan_inflection_categories.json"
     data = __load_json(file_name)
     return data
 
 
-def yomichan_metadata():
+def load_yomichan_metadata():
     file_name = "yomichan_metadata.json"
     data = __load_json(file_name)
     return data
 
 
-def variant_kanji():
+def load_variant_kanji():
     def loader(data, row):
         data[row[0]] = row[1]
     file_name = "variant_kanji.csv"
@@ -43,7 +43,7 @@ def variant_kanji():
     return data
 
 
-def __default_config():
+def __load_default_config():
     file_name = "default_config.json"
     data = __load_json(file_name)
     return data
diff --git a/bot/entries/jitenon.py b/bot/entries/jitenon.py
index 9ba61ee..a6c33e8 100644
--- a/bot/entries/jitenon.py
+++ b/bot/entries/jitenon.py
@@ -2,7 +2,7 @@ import re
 from datetime import datetime, date
 from bs4 import BeautifulSoup
 
-import bot.data as Data
+from bot.data import load_variant_kanji
 import bot.expressions as Expressions
 
 
@@ -11,12 +11,12 @@ class JitenonEntry:
 
     def __init__(self, entry_id):
         if self._VARIANT_KANJI is None:
-            self._VARIANT_KANJI = Data.variant_kanji()
+            self._VARIANT_KANJI = load_variant_kanji()
         self.entry_id = entry_id
         self.markup = ""
         self.modified_date = date(1970, 1, 1)
         self.attribution = ""
-        for column in self.COLUMNS.values():
+        for column in self._COLUMNS.values():
             setattr(self, column[0], column[1])
         self._headwords = None
 
@@ -74,7 +74,7 @@ class JitenonEntry:
         self.modified_date = date
 
     def __set_column(self, colname, colval):
-        attr_name = self.COLUMNS[colname][0]
+        attr_name = self._COLUMNS[colname][0]
         attr_value = getattr(self, attr_name)
         if isinstance(attr_value, str):
             setattr(self, attr_name, colval)
@@ -130,7 +130,7 @@ class JitenonEntry:
 
     def __str__(self):
         colvals = [str(self.entry_id)]
-        for attr in self.COLUMNS.values():
+        for attr in self._COLUMNS.values():
             attr_val = getattr(self, attr[0])
             if isinstance(attr_val, str):
                 colvals.append(attr_val)
@@ -140,7 +140,7 @@ class JitenonEntry:
 
 
 class JitenonYojiEntry(JitenonEntry):
-    COLUMNS = {
+    _COLUMNS = {
         "四字熟語": ["expression", ""],
         "読み方":   ["yomikata", ""],
         "意味":     ["imi", ""],
@@ -160,7 +160,7 @@ class JitenonYojiEntry(JitenonEntry):
 
 
 class JitenonKotowazaEntry(JitenonEntry):
-    COLUMNS = {
+    _COLUMNS = {
         "言葉":   ["expression", ""],
         "読み方": ["yomikata", ""],
         "意味":   ["imi", ""],
diff --git a/bot/scraper.py b/bot/scraper.py
index 25060fa..98add3f 100644
--- a/bot/scraper.py
+++ b/bot/scraper.py
@@ -11,7 +11,7 @@ from urllib.parse import urlparse
 from requests.adapters import HTTPAdapter
 from requests.packages.urllib3.util.retry import Retry
 
-import bot.data as Data
+from bot.data import load_config
 
 
 class Scraper():
@@ -19,7 +19,7 @@ class Scraper():
 
     def __init__(self):
         if self.__CONFIG is None:
-            self.__CONFIG = Data.config()
+            self.__CONFIG = load_config()
         pattern = r"^(?:([A-Za-z0-9.\-]+)\.)?" + self.domain + r"$"
         self.netloc_re = re.compile(pattern)
         self.__set_session()
diff --git a/bot/yomichan/export.py b/bot/yomichan/export.py
index b6ed7b1..35dcc38 100644
--- a/bot/yomichan/export.py
+++ b/bot/yomichan/export.py
@@ -5,7 +5,7 @@ from pathlib import Path
 from datetime import datetime
 from platformdirs import user_documents_dir, user_cache_dir
 
-from bot.data import yomichan_metadata
+from bot.data import load_yomichan_metadata
 
 from bot.yomichan.terms.jitenon import JitenonYojiTerminator
 from bot.yomichan.terms.jitenon import JitenonKotowazaTerminator
@@ -17,7 +17,7 @@ class Exporter:
         self._terms_per_file = 2000
 
     def export(self, entries):
-        meta = yomichan_metadata()
+        meta = load_yomichan_metadata()
         index = meta[self._name]["index"]
         index["revision"] = self._get_revision(entries)
         index["attribution"] = self._get_attribution(entries)
diff --git a/bot/yomichan/grammar.py b/bot/yomichan/grammar.py
index 1a47ade..a6a6286 100644
--- a/bot/yomichan/grammar.py
+++ b/bot/yomichan/grammar.py
@@ -1,7 +1,7 @@
 from sudachipy import tokenizer
 from sudachipy import dictionary
 
-import bot.data as Data
+from bot.data import load_yomichan_inflection_categories
 
 __U_KANA_LIST = ["う", "く", "す", "つ", "ぬ", "ふ", "む",
                  "ゆ", "る", "ぐ", "ず", "づ", "ぶ", "ぷ"]
@@ -16,7 +16,7 @@ def sudachi_rules(expression):
     if __SUDACHI_DICTIONARY is None:
         __SUDACHI_DICTIONARY = dictionary.Dictionary(dict="full").create()
     if __SUDACHI_INFLECTION_TYPES is None:
-        categories = Data.yomichan_inflection_categories()
+        categories = load_yomichan_inflection_categories()
         __SUDACHI_INFLECTION_TYPES = categories["sudachi"]
     splitmode = tokenizer.Tokenizer.SplitMode.A
     tokens = __SUDACHI_DICTIONARY.tokenize(expression, splitmode)
diff --git a/bot/yomichan/terms/jitenon.py b/bot/yomichan/terms/jitenon.py
index 3a0388b..721d491 100644
--- a/bot/yomichan/terms/jitenon.py
+++ b/bot/yomichan/terms/jitenon.py
@@ -1,4 +1,4 @@
-import bot.yomichan.grammar as Grammar
+from bot.yomichan.grammar import sudachi_rules
 from bot.yomichan.terms.terminator import Terminator
 from bot.yomichan.glossary.jitenon import make_glossary
 
@@ -44,7 +44,7 @@ class JitenonKotowazaTerminator(JitenonTerminator):
         super().__init__()
 
     def _inflection_rules(self, entry, expression):
-        return Grammar.sudachi_rules(expression)
+        return sudachi_rules(expression)
 
     def _term_tags(self, entry):
         return ""