Everyone in this discussion is using their own private and reductionist definitions of what "socialism", "communism" and "capitalism" are, ignoring the fact that since 18th century there were literally hundreds of factions declaring themselves as the only correct version of the above.
All Eastern Bloc countries (where I was born) had both "communism" and "socialism" in their names and foundational documents, but at least specifically referred to Marxism-Leninism.