What is the difference between android and java?

Actually the answer to Your question: java is java programming language.
Android is the new project under Android OS (at least on the same java) which will use the Android SDK/NDK (a set of libraries, APIs, components of the android os).

Android-is an operating system. Applications for it are written (usually) in Java (or Kotlin, although there is still a lot of YAP on which you can write applications for Android).

well, at least the java in Android is not some specific version of the original java but a Frankenstein smeared compatibility on different versions of Android... in the flesh before it for example can work kakieto things from java 7 while others are not working

Hello!
I myself while studying java development and android development...
But in android for example, Java does not work on JVM and Dalvik VM and, accordingly, simple java code for android will not launch, except that it is to install android development environment intellij idea + open jdk.
Native language on Android segodnyashniy is kotlin, which also runs on the jvm and allowed to mix pieces of code even within the same class. With kotlin I don't know, and apps for Android write on java. As for the IDE, I usually use Android Studio or Intellij IDEA (by the way, Android Studio is based on Intellij IDEA Community Edition).