Yes, such titles are permanently irreversible. But given the similar premises of a revolutionist and terrorist, it is very easy to falsely label (or even disguise) the two, especially with media and other mass manipulations of social ideologies thru educational institutions. Also, consider those blinded by artificial concepts such as nationalism, statism, racism, and/or religion. Taking these societal facades into consideration, neutralize your disposition, then reevaluate who were identified as terrorist or revolutionist; terrorism or revolution?