They are different. Meanwhile Google Ads focuses on keywords to show your ads to those people who are actively looking for your products and/or services, Facebook Ads shows your ads based on the interest(s) of their users and the ways in which they behave online. Therefore, Google Ads is ideal for reaching users who have high purchase intent, meanwhile Facebook Ads is great for reaching users who do not know you and are not looking for you, but once they see your ad, they might be interested on the products or services you offer.
Consequently, if you are to decide on which marketing approach to use, you should do so depending on your goals. However, you don’t need to decide, as you can also use both. Nothing prevents you from doing it.
