diff --git a/src/analytics_query_analyzer/analyzer.py b/src/analytics_query_analyzer/analyzer.py
index 630689b..0d64823 100644
--- a/src/analytics_query_analyzer/analyzer.py
+++ b/src/analytics_query_analyzer/analyzer.py
@@ -16,7 +16,7 @@ def analyze(
     dialect: str | type[dialects.Dialect],
     sql: str,
     schema: dict,
-    default_project: str,
+    default_catalog: str,
 ):
     dialect = _resolve_dialect(dialect)
     expression = parse_one(sql, read=dialect)
@@ -24,10 +24,10 @@ def analyze(
     qualified = optimizer.qualify.qualify(
         expression,
         schema=schema,
-        catalog=default_project,
+        catalog=default_catalog,
         validate_qualify_columns=False,
     )
-    analyzer = ReferencesAnalyzer(schema, default_project)
+    analyzer = ReferencesAnalyzer(schema, default_catalog)
     return analyzer.analyze(qualified)
 
 
@@ -35,7 +35,7 @@ def analyze_timespan(
     dialect: str | type[dialects.Dialect],
     sql: str,
     schema: dict,
-    default_project: str,
+    default_catalog: str,
     current_date_provider=None,
 ) -> dict:
     dialect = _resolve_dialect(dialect)
@@ -44,10 +44,10 @@ def analyze_timespan(
     qualified = optimizer.qualify.qualify(
         expression,
         schema=schema,
-        catalog=default_project,
+        catalog=default_catalog,
         validate_qualify_columns=False,
     )
-    analyzer = TimespanAnalyzer(schema, default_project, current_date_provider)
+    analyzer = TimespanAnalyzer(schema, default_catalog, current_date_provider)
     return analyzer.analyze(qualified)
 
 
diff --git a/src/analytics_query_analyzer/column_resolver.py b/src/analytics_query_analyzer/column_resolver.py
index 9cd84b9..f62975e 100644
--- a/src/analytics_query_analyzer/column_resolver.py
+++ b/src/analytics_query_analyzer/column_resolver.py
@@ -5,7 +5,7 @@
 def resolve_column_path(
     column: exp.Column,
     scope,
-    default_project: str,
+    default_catalog: str,
     schema: dict,
     column_extractor,
 ) -> tuple[str, str] | None:
@@ -25,12 +25,12 @@ def resolve_column_path(
         if not nested_column:
             return None
         return resolve_column_path(
-            nested_column, source, default_project, schema, column_extractor
+            nested_column, source, default_catalog, schema, column_extractor
         )
     if not isinstance(source, exp.Table):
         return None
 
-    project = source.catalog or default_project
+    project = source.catalog or default_catalog
     dataset = source.db
     table = source.name
     if not dataset and project in schema:
diff --git a/src/analytics_query_analyzer/references_analyzer.py b/src/analytics_query_analyzer/references_analyzer.py
index 99a23ad..f2debc2 100644
--- a/src/analytics_query_analyzer/references_analyzer.py
+++ b/src/analytics_query_analyzer/references_analyzer.py
@@ -5,9 +5,9 @@
 
 
 class ReferencesAnalyzer:
-    def __init__(self, schema: dict, default_project: str):
+    def __init__(self, schema: dict, default_catalog: str):
         self.schema = schema
-        self.default_project = default_project
+        self.default_catalog = default_catalog
 
     def analyze(self, expression: exp.Expression) -> dict:
         references: dict[str, set[str]] = {}
@@ -17,7 +17,7 @@ def analyze(self, expression: exp.Expression) -> dict:
                 resolved = resolve_column_path(
                     column,
                     scope,
-                    self.default_project,
+                    self.default_catalog,
                     self.schema,
                     _extract_column,
                 )
diff --git a/src/analytics_query_analyzer/timespan_analyzer.py b/src/analytics_query_analyzer/timespan_analyzer.py
index 0b42edc..9937649 100644
--- a/src/analytics_query_analyzer/timespan_analyzer.py
+++ b/src/analytics_query_analyzer/timespan_analyzer.py
@@ -20,11 +20,11 @@ class TimespanAnalyzer:
     def __init__(
         self,
         schema: dict,
-        default_project: str,
+        default_catalog: str,
         current_date_provider: Callable[[], str | date | datetime] | None = None,
     ):
         self.schema = schema
-        self.default_project = default_project
+        self.default_catalog = default_catalog
         self.current_date_provider = current_date_provider or date.today
 
     def analyze(self, expression: exp.Expression) -> dict[str, dict[str, str | None]]:
@@ -141,7 +141,7 @@ def bounds_for_comparison(
             if not column:
                 return {}
             resolved = resolve_column_path(
-                column, scope, self.default_project, self.schema, self.extract_column
+                column, scope, self.default_catalog, self.schema, self.extract_column
             )
             if not resolved:
                 return {}
@@ -158,7 +158,7 @@ def bounds_for_comparison(
             if not column:
                 return {}
             resolved = resolve_column_path(
-                column, scope, self.default_project, self.schema, self.extract_column
+                column, scope, self.default_catalog, self.schema, self.extract_column
             )
             if not resolved:
                 return {}
@@ -218,7 +218,7 @@ def bounds_for_comparison(
             return {}
 
         resolved = resolve_column_path(
-            column, scope, self.default_project, self.schema, self.extract_column
+            column, scope, self.default_catalog, self.schema, self.extract_column
         )
         if not resolved:
             return {}