This equivocation is often presented with viruses. Evolutionists argue that since viruses mutate therefore nature’s millions of species originated via evolution and all of biology arose spontaneously. For example, Steve Jones, writes that the changes observed in HIV contain Darwin’s “entire argument.” 
Similarly professor Pamela Bjorkman states that a mutating virus is “evolution at work” and that “In the same way, people have evolved, but over a much slower time scale.” 
Incredibly, the equivocation is sometimes even more blatant than this, such as in this example from Randy Moore and Sehoya Cotner:
These theories, in the words of the late Stephen Jay Gould, have been “confirmed to such a degree that it would be perverse to withhold provisional assent.” Evolution is one such theory.
Definition of Evolution
Most simply, evolution is any change in a population’s genetic composition over time. There are several key features of this definition:
1. Evolution is a population-level phenomenon, rather than something that can be measured in individuals. Populations evolve; individuals do not.
2. Evolution has occurred when any genetic change—even something that seems insignificant—happens to any number of individuals in a population.
3. Evolution can be measured in generational time.
To appreciate this, consider a population of rock pocket mice living on the lava outcrop in the southwestern United States. At an initial observation, 40% of the mice possessed an allele (or genetic variant) that produces lightly colored fur when inherited from each parent. A few generations later, only 34% of the mice possessed this allele. This change in the genetic composition of the population means that evolution has occurred. For evolutionary biologists, the fact that evolution has occurred is often not as exciting as the questions that arise as the result of this observation. For example, why did evolution occur? 
Here Moore and Cotner argue that the origin of species via evolution is a fact and then explain it as “any change in a population’s genetic composition over time.” They give an example of a population of rock pocket mice with an allele that changes frequency which “means that evolution has occurred.” Obviously evolution must be a fact, right?
Such bait-and-switch shell games are standard fare in classrooms and the evolution literature. They are one of the many types of misrepresentations evolutionists use to promote their non scientific, religious dogma. This is not to judge evolutionists and I certainly forgive evolutionists for misleading people. Forgiveness is crucial and grace is needed all around. But to forgive a misrepresentation does not mean to accept a misrepresentation. We need to understand evolution for what it is.
1. Steve Jones, Darwin’s Ghost, p. 15.
3. Randy Moore, Sehoya Cotner, Arguing for Evolution: An Encyclopedia for Understanding Science, p. 2.