As a figure of speech, yes. I can see how the two categories can affect each other, but not become synonymous with one another.
I still don't buy your phoney baloney, and I will explain.
All religions are a belief system, but are all belief systems a religion? I don't think so. If it were, morality becomes a religion, science or beliefs based on evidence becomes a religion, atheism becomes a religion, pragmatism becomes a religion, altruism becomes a religion, and so does agnosticism.
You're juxtapositioning the word belief and religion and trying to equate it by oversimplification, and committing a category error.
So, what say you?