What is the purpose of declaring with the keywords 'const' and 'val' in Kotlin?

In Kotlin, the keywords const and val are used to declare immutable values, but with different characteristics:

• const are compile-time constants. They must be primitive types or strings and are declared at the object or file level. The value of const cannot be changed and is known at compile time.

• val are runtime immutable variables. The value is assigned once during initialization and cannot be changed, but it can be computed at runtime.

Example:

const val MAX_COUNT = 100 // compile-time constant
val currentTime = System.currentTimeMillis() // immutable runtime value