What is a `Task` and how is it different from a `Thread`?

Answer: A Task is Swift's unit of async work. Unlike threads, tasks are lightweight, managed by the Swift runtime, and can be suspended without blocking an underlying thread.

	Task	Thread
Cost	Lightweight	Heavy (~512KB stack)
Managed by	Swift runtime	OS
Suspension	Yes (non-blocking)	No (blocks thread)
Cancellation	Built-in	Manual

Code Example:

// Creating a task
let task = Task {
    let data = try await fetchData()
    await MainActor.run { updateUI(with: data) }
}

// Cancelling it
task.cancel()

// Task inherits priority and actor context from where it's created
// Use Task.detached to explicitly break that inheritance
Task.detached(priority: .background) {
    await expensiveBackgroundWork()
}