Does fitness (as used in biology) and survival have the same meaning? Why or why not

NO, they are not the same. The fittest individual is not necessarily the strongest, fastest, or biggest. Fitness also applies to the ability to find a mate and produce offspring. Survival is the form that an individual will leave the most copies of itself in the subsequent generations. Fitness does not include a measure of survival or lifespan. Fitness is measured by an organism's ability to survive and reproduce, which determines the size of its genetic contribution to the next generation.