DOC: Add note to docstring DataFrame.compare about identical labels (pandas-dev#35492)

* [IMP] - pandas-dev#35491 - added note docstring

* [FIX] - pandas-dev#35491 - remove trailing whitespace

* [IMP] - pandas-dev#35491 - added explanation about shape

* [FIX] - pandas-dev#35491 - labelS

* [FIX] - 35491 - removed add

* added Raises section

* Fix raise section

* Removed trailing whitespace

* Adjustments after review

* Removed trailing whitespace

Author: erfannariman

pandas/core/frame.py

@@ -5891,14 +5891,23 @@ def _construct_result(self, result) -> DataFrame:
     The resulting index will be a MultiIndex with 'self' and 'other'
     stacked alternately at the inner level.
 
+Raises
+------
+ValueError
+    When the two DataFrames don't have identical labels or shape.
+
 See Also
 --------
 Series.compare : Compare with another Series and show differences.
+DataFrame.equals : Test whether two objects contain the same elements.
 
 Notes
 -----
 Matching NaNs will not appear as a difference.
 
+Can only compare identically-labeled
+(i.e. same shape, identical row and column labels) DataFrames
+
 Examples
 --------
 >>> df = pd.DataFrame(