I think that AWS offers more distinctive names, which helps experienced users a lot. EC2 is instantly recognisable as meaning Amazon's compute service, S3 is storage. GCE and GCS could stand for all sorts, Google brings up "General Certificate of Education" and "Glasgow Coma Scale" as the first results.

I suppose because of this, Google tend to use the full name in most of their documentation. It does make learning how to use Google Cloud as a beginner a lot easier though.