Google Cloud offers a set of tools that you can use to manage resources and applications hosted on Google Cloud Platform. These tools include the gcloud command-line tool, as well as gsutil and bq.
Google Cloud Platform is a cloud computing platform by Google that offers hosting on the same supporting infrastructure that Google uses internally for end-user products like Google Search and YouTube. Cloud Platform provides developer products to build a range of programs from simple websites to complex applications.
Google Cloud Platform is a part of a suite of enterprise solutions from Google for Work and provides a set of modular cloud-based services with a host of development tools. For example, hosting and computing, cloud storage, data storage, translations APIs and prediction APIs.
The Google Cloud Platform is composed of a family of products, each including a web interface, a command-line tool and a REST API.