Breakthrough and Groundbreaking

Breakthrough noun - An instance of notable progress in the development of knowledge, technology, or skill.

Groundbreaking and breakthrough are semantically related. In some cases you can use "Groundbreaking" instead an adjective "Breakthrough".

Groundbreaking adjective - Being or producing something like nothing done or experienced or created before.

Breakthrough and groundbreaking are semantically related. Sometimes you can use "Breakthrough" instead an adjective "Groundbreaking".