I want to say "Rieger coined the notion of deep solidarity." However, I'm not sure about several aspects of this:
- Can you coin a notion, or only a phrase?
- Can I say he coined the phrase, even if other people used these words with their typical meanings, but he first defined them in a technical sense different than merely "strong solidarity"? (See Rieger's definition of the phrase and others discussing it)
- How might others suggest I word this statement?