I prefer to think of them as seperate.There are certification specialties for "advanced"divers.They entail a lot of different aspects of diving ,but none of the traditional keynotes of a "technical" dive.Some these are overhead environment(real and deco),penetration of different environments(cave,cavern,wreck)deeper than the traditional 130',the use of staged decompression,planned decompression and the equipment necessary to implement these plans.There is also a lot of specialised training to use all those "gadgets"reels,spools,staged bottles,techniques for getting to and from the site with all that junk.There is also the prolonged exposure to hypothermic environments which makes exposure protection issues critical(drysuit training)All this compared to learning how to do a boat dive,a night dive,a drift dive,plot a square in 60 ft of water,learn an hour about either bouyancy,photography,u/w hunting etc... and maybe thro in a rescue course.No ,I prefer not to use terms like "master diver" and "advanced diver" as a synonym for "tek dude"Not a macho thing as the 2nd best diver I know is 5' nothin' and female,it's about respect and clarity.