Blacktop and Flagstone

Blacktop noun - A black bituminous material used for paving roads or other areas; usually spread over crushed rock.

Flagstone and blacktop are semantically related. In some cases you can use "Flagstone" instead a noun "Blacktop".

Flagstone noun - Stratified stone that splits into pieces suitable as paving stones.

Blacktop and flagstone are semantically related. You can use "Blacktop" instead a noun "Flagstone".