Using the full name of a product vs. its acronym?

Working on a website that is trying to rank on a very specific product. The product is often referred to by its full name or just by its acronym. The full name and the acronym are showing as having the same search volume and competition, but different top-of-page bid amounts in Google's keyword planner.

My question is; when referring to the product on the website should I always refer to it as "Product real name (acronym)"? ex: Search Engine Optimization (SEO)

Will Google treat the full name and acronym the same in terms of SEO? or should I split usage of the full name and the acronym (not optimal because it'll make it look inconsistent and I'll get some flack from our writers)