In general, giving people an action to take works better than labeling a button with a noun. When working with Lifeproof, Optimizely found that in a three-way test between “Store,” “Shop Now,” and “Shop,” as button text, using the “Shop Now” text resulted in a 16% increase in monthly revenue. They found something similar with Insound — that using “Review Order” as text performed better than “Continue,” “Submit,” or “Almost Done.”