Bedrock and Grounds

Bedrock noun - An immaterial thing upon which something else rests.

Grounds and bedrock are semantically related in thing topic. In some cases you can use "Grounds" instead a noun "Bedrock", when it comes to topics like foundation.

Grounds noun - Your basis for belief or disbelief; knowledge on which to base belief.

Bedrock and grounds are semantically related in thing topic. Sometimes you can use "Bedrock" instead a noun "Grounds", if it concerns topics such as basis.