What does this statement mean "Cypress commands do not return their subjects, they yield them"?

Question

I'm learning about Cypress.io and came across this statement in their official site Cypress.io

"Cypress commands do not return their subjects, they yield them."

What is the difference between "yield" and "return" in commands in cypress.io?

Answer 1

I take yield to mean 'pay it forward', whereas return = 'pay it back'.

See Core Concepts

Cypress commands are asynchronous and get queued for execution at a later time. During execution, subjects are yielded from one command to the next, and a lot of helpful Cypress code runs between each command to ensure everything is in order.