Call it quits and Step down from

Call it quits verb - Stop doing what one is doing.

Step down from and call it quits are semantically related. In some cases you can use "Step down from" instead a verb phrase "Call it quits".

Step down from verb - To give up (a job or office).

Call it quits and step down from are semantically related. Sometimes you can use "Call it quits" instead a verb "Step down from".