How long has it been since you graduated high school? Really, isn't high school the last place you fully utilized all the parts of speech. Unless you majored in English, in college, you haven't traveled down the ole parts of speech highway since.....(add your graduation date here).
While working up lesson plans for my sons' homeschooling in writing, I was amazed at how much I'd forgotten of the parts of speech. You're asking yourself right about now, what does this have to do with freelance writing? Here's the scoop, do you see it? It's right there mingling with the noun and verb. For me it's the hyper adjective! Did you look closely? Did you see it? It sits there happily waiting for me to put it to use.
Seriously any part of speech can enhance your article. How you put your information together, when creating an article for purchase, will either catch the eye of a buyer right away or have them yawning from the start. Freelance writing is creative writing, but with less on the dramatic and more on the serious. This is true when facts come into play. By making those less restrictive places within your article, visually pleasing, you stand a good chance of selling your article.
Be it noun, verb, adjective, adverb, pronoun or any other parts of speech, reacquaint yourself with their usefulness. Become friends with them. If you treat them well enough, they just might all fall into the right places for you.
Ya, ya you say, but did I get your attention? If writing is your livelihood, you'll benefit from using the parts of speech to their fullest potential.