Alternate timeline in which all Greek and Latin roots are swapped:
catastrophe -> contraverse cephalopod -> capitoped chlorophyll -> viridofolia democracy -> populimpery homicide -> anthropoctony homosexual -> equigamic kilometer -> millimensure interregnum -> mesarchy magnanimous -> megapsychic manuscript -> chirography motorcycle -> ergatorote microscope -> parvovisor oxygen -> acidofex polyamory -> multierasty television -> remotoscope universe -> monostrophe
amphibious -> ambivivent automobile -> ipsokinete autopsy -> ipsovision circumcision -> cyclotomy conspiracy -> synpnoea epilogue -> supraverb homosexual -> idemphilic [thanks to @dative-ciceroni-pizza2h] menstruation -> selenosis [looser] Mesopotamia -> Medioflumina pornography -> lupascript scissor -> schizotron [?] troglodyte -> cavernicole tyrannosaur -> dictatoreptile
(honorable mention: carnivore <-> sarcophage)
