diff --git a/iscc_core/__init__.py b/iscc_core/__init__.py
index e5f8854..96e1925 100644
--- a/iscc_core/__init__.py
+++ b/iscc_core/__init__.py
@@ -1,5 +1,5 @@
 __version__ = "0.2.0"
-from iscc_core.options import core_opts, options_conformant
+from iscc_core.options import core_opts, conformant_options
 from iscc_core import v0
 
 # Import full api to toplevel
diff --git a/iscc_core/conformance.py b/iscc_core/conformance.py
index b9db6ba..1f95ba1 100644
--- a/iscc_core/conformance.py
+++ b/iscc_core/conformance.py
@@ -47,7 +47,7 @@
 TEST_DATA = HERE / "data.json"
 
 
-def generate_tests():
+def conformance_testdata():
     # type: () -> Generator[Tuple[str, Callable, List[Any], List[Any]]]
     """
     Yield tuples of test data.
@@ -75,7 +75,7 @@ def generate_tests():
             yield test_name, func_obj, test_values["inputs"], test_values["outputs"]
 
 
-def selftest():  # pragma: no cover
+def conformance_selftest():  # pragma: no cover
     # type: () -> bool
     """
     Run conformance tests.
@@ -84,7 +84,7 @@ def selftest():  # pragma: no cover
     :rtype: bool
     """
     passed = True
-    for test_name, func, inputs, outputs in generate_tests():
+    for test_name, func, inputs, outputs in conformance_testdata():
         try:
             if func(*inputs) != outputs:
                 raise AssertionError(f"FAILED: {func.__name__}.{test_name}")
diff --git a/iscc_core/options.py b/iscc_core/options.py
index f2f497d..f46e944 100644
--- a/iscc_core/options.py
+++ b/iscc_core/options.py
@@ -358,7 +358,7 @@ class Config:
 has_logged_confromance = False
 
 
-def check_options(opts):
+def conformance_check_options(opts):
     # type: (CoreOptions) -> bool
     """Check and log if options have non-default conformance critical values"""
     global has_logged_confromance
@@ -373,4 +373,4 @@ def check_options(opts):
 
 
 core_opts = CoreOptions()
-options_conformant = check_options(core_opts)
+conformant_options = conformance_check_options(core_opts)
diff --git a/tests/test_0_options.py b/tests/test_0_options.py
index 57bacc5..1766672 100644
--- a/tests/test_0_options.py
+++ b/tests/test_0_options.py
@@ -9,7 +9,7 @@ def test_options_nonstandard():
     import iscc_core
 
     assert iscc_core.core_opts.meta_trim_name == 666
-    assert iscc_core.options_conformant is False
+    assert iscc_core.conformant_options is False
     iscc_core.core_opts.meta_trim_name = 128
 
 
diff --git a/tests/test_conformance.py b/tests/test_conformance.py
index c02ba99..535fa7a 100644
--- a/tests/test_conformance.py
+++ b/tests/test_conformance.py
@@ -6,15 +6,15 @@
 
 
 def test_generate_tests():
-    test_generator = conformance.generate_tests()
+    test_generator = conformance.conformance_testdata()
     assert isinstance(test_generator, Generator)
 
 
 def test_confromance_selftest():
-    assert conformance.selftest()
+    assert conformance.conformance_selftest()
 
 
-@pytest.mark.parametrize("testname,function,inputs,outputs", conformance.generate_tests())
+@pytest.mark.parametrize("testname,function,inputs,outputs", conformance.conformance_testdata())
 def test_conformance(testname, function, inputs, outputs):
     result = function(*inputs)
     if hasattr(result, "dict"):