Impressions and reach are ad terms, but they mean different things. Reach is the number of people who see an ad once. Impressions count how many times the ad is shown, even if the same person sees it times. If one person sees an ad five times, reach is one and impressions are five. Reach shows how a message goes, while impressions show how often it appears. Both numbers help explain ad exposure, but they answer different questions. Which one do you think matters more for awareness marketing?