A condition is known to be something that will be included in a contract because this will be the main goal of the contract. For example, in a contract, one of the conditions is that people should not live in the condominium unit until the 15th of June.
If the person violates this condition, then the contract can become null and void or there is a big chance that the person who violated the contract would need to do certain things. There are different things that can be done when a person has breached the contract.
The warranty is usually the amount of time allotted for a certain product that will ensure that it will be in its best condition. For example, an air mattress is not supposed to wear out within a certain number of months. If it does and it is still under warranty, it would need to be changed.