No the flasher has a bimetal spring inside that releases from the contact when it gets too hot, it cools off in about the same amount of time and then flips back to make contact again. The spring flicking back and forth is what makes the click-tick click-tick sound when the turn signals or hazards are on.
A normal relay has a 2 sides to it, a switch side and a solenoid side. When the solenoid side receives power it pulls the switch side, closed which completes the circuit for whatever it powers. The big difference is that the normal relay will stay on or off for as long as it receives power. Where-as the flasher will not.
84 Ranger XLT, 2.8, Auto, 2wd
02 Lincoln LS V8, 5 Speed auto, Leather, Chrome 17"s