docs: use pandas API instead of pandas-like or pandas-compatible (#1825)

Author: tswast

README.rst

@@ -6,7 +6,8 @@ BigQuery DataFrames (BigFrames)
 BigQuery DataFrames (also known as BigFrames) provides a Pythonic DataFrame
 and machine learning (ML) API powered by the BigQuery engine.
 
-* ``bigframes.pandas`` provides a pandas-compatible API for analytics.
+* `bigframes.pandas` provides a pandas API for analytics. Many workloads can be
+  migrated from pandas to bigframes by just changing a few imports.
 * ``bigframes.ml`` provides a scikit-learn-like API for ML.
 
 BigQuery DataFrames is an open-source package.

notebooks/getting_started/bq_dataframes_template.ipynb

@@ -81,7 +81,8 @@
         "\n",
         "BigQuery DataFrames (also known as BigFrames) provides a Pythonic DataFrame and machine learning (ML) API powered by the BigQuery engine.\n",
         "\n",
-        "* `bigframes.pandas` provides a pandas-like API for analytics.\n",
+        "* `bigframes.pandas` provides a pandas API for analytics. Many workloads can be\n",
+        "  migrated from pandas to bigframes by just changing a few imports.\n",
         "* `bigframes.ml` provides a scikit-learn-like API for ML.\n",
         "* `bigframes.ml.llm` provides API for large language models including Gemini.\n",
         "\n",

third_party/bigframes_vendored/pandas/io/gbq.py

@@ -45,7 +45,7 @@ def read_gbq(
         * (Recommended) Set the ``index_col`` argument to one or more columns.
           Unique values for the row labels are recommended. Duplicate labels
           are possible, but note that joins on a non-unique index can duplicate
-          rows via pandas-like outer join behavior.
+          rows via pandas-compatible outer join behavior.
 
         .. note::
             By default, even SQL query inputs with an ORDER BY clause create a