ABCs and Bedrock

ABCs noun - The elementary stages of any subject (usually plural).

Bedrock and ABCs are semantically related. in basis topic. In some cases you can use "Bedrock" instead a noun "ABCs", when it comes to topics like basis for something physical or mental.

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

ABCs and bedrock are semantically related. Sometimes you can use "ABCs" instead a noun "Bedrock".