Facebook Ads Characteristics
Based on demographics. That means as an advertiser you can choose your ad to be shown to people according to their personal profile, tastes, and preferences such as age, sex, location (country, state, city), hobbies and interests, educational level, birth date, and workplace.
Google Ads
Based on keywords. This means if you want to advertise you need to understand search engine optimization and research keyword terms. Text element only. Google ads only have a text element with a 75 character limit. Google ads appear not only on search engine result pages but also on websites and in Gmail accounts.