We all have words that we favor, that we rely on consciously or unconsciously or overuse. I notice myself using certain words too much sometimes. This gives me useful information about how I am thinking. Suppose it is nuance. In that case I am probably in a mode of thought where I am wanting to be especially attentive to nuance. Or the word attentive, or vicissitude or fraught. These words function as barometers of my attitude toward my subject matter.
Other words are merely stylistic tics. When I notice those overwhelming my prose, I do a word search in my document and change or eliminate them. I have have stylistic tics that are not words but constructions. "Not only... but also" is one example. You wouldn't want to write three paragraphs in a row with "not only... but also." Nothing wrong with the construction itself, but the reader doesn't want to think you are a one-trick pony.
To many words in -tion, fy, or, -ize can also give your prose a heavy feeling. Problematize, realize, actualize, reify, deify. You don't want too much rhyme or jingle, as the composition teachers used to call it (maybe still do).