I suggested the following edit to the tag:
"Quantum cryptography describes the use of quantum mechanical effects to perform cryptographic tasks, this method is alternatively known as quantum communication. These terms are interchangeable in most literature. This is not to be confused with quantum computing."
I believe the current tag now reads:
"Quantum cryptography describes the use of quantum mechanical effects to perform cryptographic tasks or to break cryptographic systems. In particular quantum cryptography handles the aspects of quantum communication and quantum computation."
I have an issue with this, because quantum cryptography does not deal with breaking any encryption schemes. Breaking encryption is only done by quantum computing.
Quantum computing and quantum communication are two distinct areas
requiring distinct, and unique, hardware in order to operate.
I do not think the quantum cryptography tag should mention quantum computing at all.
I also disagree with Codes' answer. I think keeping pqc and qc separate will help people answering know if they need to address any component of quantum computing, or can write their answer focusing only on the pqc field.
I also disagree that quantum cryptography be replaced by QKD. That would significantly narrow the tag. I think the goal of Codes suggestion about changing quantum crypto with QKD was to segment it from quantum computing, but we don't need to change quantum crypto to QKD in order to do that.
I don't think quantum computing or cryptanalysis should be mentioned in the quantum crypto tag, because both of those are distinctly different from quantum cryptography.