There is a big difference. If we disagree on when the Rapture will occur it doesn’t affect our salvation. If Catholics disagree with the RCC on Mary they are declared anathema.
Anathema:
a person or thing accursed or consigned to damnation or destruction.
a formal ecclesiastical curse involving excommunication.
any imprecation of divine punishment.
a curse; execration.
What the Holy Spirit tells us is that we have assurance of salvation through the shed blood of Christ and to reject all cults and false teachings of man.
Tell me again how the holy spirit directed Christians to murder and torture other Christians and engage in murderous crusades.
Tell me again how condoning these murders does not make a person equally guilty.
Yeah, tell everyone.
One cannot disagree with a dogmatic teaching of the Church and actually be in communion with the Church. It is definitional. (hint: look up what dogma means)
You have again looked to a secular dictionary to try to determine what the Church means in its declarations. It would be simpler (and a whole lot less embarrassing for you) if you simply looked to how the Church defines its terms if you honestly want to know what it is trying to say. An Anathema is simply the highest or most severe form of Excommunication. Whereas, Excommunication is an instruction to no longer participate in Church activities and most Sacraments (reconciliation being the exception) and is only applicable to the excommunicated individual. Anathema is an instruction to the Church to effectively exile the individual from the community of the Church. Nowhere does the Church claim the authority to damn or judge anyone.
Peace be with you