I'd like to know there is any difference in meaning between "by way of illustration" and "as an illustration"? or there are used interchanged? I'd like to use it in the following text in the meaning of "in order to illustrate [the concept previously mentioned]".
According to the reading, the term "revealing coloration" refers to the defense mechanism adopted by many animals by which they display the bright areas of their body all of a sudden to frighten predators away. By way of illustration, the professor offers two examples.
In some dictionaries "by way of illustration" is defined as "as an example", but I can see many cases in newspapers that it is used in the meaning I mentioned above. Could you please clarify this point? Thank you in advance!