CPR LTT TAXIED ACROSS AN ACTIVE RWY WITHOUT CLRNC.

Narrative

AFTER A LONG DUTY DAY; WE WERE TAKING THE ACFT TO OUR MAINT BASE IN TAMPA; FL. DUE TO COMPANY POLICY; THESE 'DEADHEAD' LEGS ARE THE ONLY CHANCE THE CO-PLT (ME) GETS TO FLY AND-OR TAXI THE ACFT. OUT OF 75 HRS OF FLT TIME IN THE LAST 90 DAYS; ONLY 6 HRS WERE REAL 'STICK' TIME FOR ME. THE USUAL PROC WHEN LNDG AT TAMPA (TO THE N) IS FOR TURBOJETS TO USE RWY 36L FOR ARRS. AFTER EXITING THE RWY; WE HAVE TO TAXI ACROSS THE ARPT TO OUR MAINT FAC. THIS INVOLVES XING THE OTHER ACTIVE RWY (36R). THE CAPT WAS ON THE OTHER RADIO INFORMING THE FAC OF OUR ARR AND I WAS TAXIING THE ACFT. UPON APCHING THE OTHER ACTIVE RWY IN OUR TAXI PATH; THE GND CTLR TOLD US TO 'TURN RIGHT ON TXWY 'C' AND CROSS THE E-W.' I UNDERSTOOD 'RIGHT ON TXWY 'C' AND CROSS USING THE E-W TXWY.' SINCE I HAD ALWAYS HEARD OF RWY 9-27 CALLED RWY 9-27 AND ONLY ITS ASSOCIATED TXWY REFERRED TO AS 'E-W;' I THOUGHT THIS WAS A CLRNC TO CROSS THE ACTIVE USING THAT TXWY. I LOOKED BOTH WAYS WHEN XING THE ACTIVE AND SAW A HIGH WING SMA TAXIING INTO POS AT THE SAME TIME WE WERE XING. I ASSUMED THE GND CTLR HAD THOUGHT WE COULD CROSS SAFELY AND HENCE ISSUED THE ABOVE CLRNC. THERE WAS NO DYNAMIC CONFLICT BECAUSE THE SMA WAS HOLDING IN POS AFTER WE CROSSED; AND WE BOTH ENTERED THE RWY AT THE SAME TIME. ANOTHER CASE OF COMS GONE BAD THROUGH DIFFERENT MEANINGS OF THE SAME TERMINOLOGY.