Specific performance is when the court orders someone who is in breach of contract to do what they said they would do under the contract. Specific performance is not granted if the contractual breach can be remedied with damages, or if it is a personal service.
Frustration is when something happens that makes it impossible to perform the contract or makes it so that performance of the contract would undermine the purpose of the contract, whereas breach is caused by a non-performance under the contract.
Complete performance under a contract is when a party performs exactly as they were supposed to under the contract. Substantial performance is when a party performed but there was a minor deficit in their performance
one is better then the other clearly Answer: evaluation generally precede appraisal , job evaluation is done to evaluate the job and not the job holder but performance appraisal is done to evaluate the job holder on the basis of her performance