Is there a difference between disallowing an action and denying it? I think so, and that word choice matters. I see this pattern everywhere. Do you disallow so

Is there a difference between disallowing an action and denying it? I think so, and that word choice matters. I see this pattern everywhere. Do you disallow someone on FB, or do you block them? Does iptables use disallow as a keyword? I do see BLOCK and DROP though. Normalized use of the passive voice is no different than being uncomfortable with making eye contact during a regular conversation. Perhaps the writer accounted for that considering the user base.