Google Play has been the catch-all umbrella term for most of Google's app and mobile gaming endeavors for the past decade and more. The Google Play Store, its app marketplace, continues to be the main source of software and security for Android phone owners worldwide — alternative stores like the Galaxy Store notwithstanding.
Some Google Play services, like Google Play Music, didn't stand the test of time, getting Killed by Google or incorporated into other apps despite their popularity with core Google fans. While others, like Google Play Services (note the capital "S"), are vitally important to the entire Android ecosystem.
