keywords property
{@template ads.keywords} The keywords used to load the ad.
AdMob already knows a good bit about the interests of your app's users based on which ads they've clicked on in the past. The keywords that you add to an ad request are just one piece of the equation when it comes time to actually pick the ad that gets shown. They're not intended to be a strict filter.
Instead, each time your app requests an ad, AdMob will look at all the info it has at its disposal and choose the ad most likely to be interesting to that user at that moment, and then serve it. The more likely the user is to be interested in the ad, the more useful it is for them, and the more valuable for the advertiser. That generally means happier users and more revenue for you.
{@endTemplate}
Implementation
final List<String> keywords;