suffix is the ending, thus the suffix of vacation is "tion"
Abettor Ablator Adaptor Adjuror Advisor Aerator Alastor Alienor Anaphor Assuror Auditor Aviator Belabor Bicolor Camphor Chantor Citator Clangor Coactor Creator Curator Decolor Delator Devisor Dilator...
Yes, there is. Some examples are: # thereabout # thereabouts # thereafter # thereat # thereby # therefor # therefore # therefrom # therein # thereinafter # thereinto # theremin # theremins # thereof...
Actor,Philosophor, mentor
administrator anchor abhor arbitrator author aviator benefactor corridor contributor clamor conductor commentator color competitor distributor director donor decor elevator emperor excavator editor...