Questions about Google web applications on a broad level. If you are talking about the web search application (www.google.com, www.google.es, www.google.com.mx, etc.) use the "google-search" tag instead.
Use this tag if you're talking about Google web applications in general.
If your question is about the web search application (i.e. www.google.com, www.google.es, www.google.com.mx, etc.1, use the google-search tag instead.
Tags for specific Google web applications
For question about specific Google web applications use the corresponding tag:
There are a lot of tags that use "google" as part of their name like google-alerts, the following do not:
Also: android chrome-bookmarks chrome-os chrome-web-store goo.gl g-suite hangouts-on-air picasa-web-albums
To search for some of the questions that include a "google" try writing
[google*] in the search box of this site (sample)
Tags for Google specific features related to web applications:
google-account google-account-profile google-adsense google-adwords google-alerts google-amp google-analytics google-api google-app-engine google-apps google-apps-email google-apps-for-work google-apps-script google-apps-sync google-authenticator google-bookmarks google-books google-calculator google-calendar google-calendar-reminders google-chart-api google-checkout google-chrome google-chrome-extensions google-classroom google-cloud google-cloud-print google-code google-contacts google-custom-search google-dashboard google-data-studio google-dictionary google-docs google-domains google-doodle google-drawings google-drive google-drive-search google-earth google-feedback google-finance google-fit google-fonts google-forms google-fusion-tables google-groups google-groups-tags google-hangouts google-image-search google-keep google-latitude google-launcher google-maps google-movies google-multi-login google-music google-my-business google-my-maps google-news google-ngram-viewer google-now google-passwords google-photos google-play google-play-books google-play-music google-play-store google-plus google-plus-1 google-plus-circles google-plus-communities google-plus-events google-plus-games google-plus-pages google-plus-photos google-plus-tags google-product-forums google-reader google-scholar google-scribe google-search google-search-history google-sheets google-sheets-addons google-sheets-charts google-sheets-query google-sheets-timestamp google-shopping google-sites google-sky google-slides google-smart-lock google-spaces google-takeout google-talk google-tasks google-team-drive google-toolbar google-transit google-translate google-trends google-voice google-wallet igoogle
Searching for [google*]
If you write [google*] the search will become a list of the top 20 tags sorted by the number of questions, but there are many more tags.