Public goods are non-excludable (impossible to prevent anyone from using the good) and non-rivalrous (one person's use doesn't diminish the availability for others). Google doesn't match the criteria.
The local electric utility isn't "non-excludable" (unless you ignore criminal law) but it is certainly a public utility, a natural monopoly, and public good by most metrics. The vast majority of jurisdictions regulate it accordingly.
Things like public parks and public pools would be classic examples of a "Common resource." Rival and non-excludable.
Classic examples of true public goods would be public radio broadcasting or national defense.
At some point in the past couple decades, people have come to misunderstand the term. Having heard the argument that public goods justify taxation to fund them, they come to believe that anything they like must be a public good.