Distinguish between the following: Tenancy at will and Tenancy by sufferance

Tenancy-at-will: Tenancy-at-will is a tenancy recognised by law. This comes into existence where a tenant holds over with the consent is let into occupation. If the tenant continues to be in possession after the expiration of tenancy and pays the rent to the landlord, the tenancy may be one from year to year or from month to month. During a period when the tenant is in possession after expiry of the period, if the tenant stays with the consent of the landlord till such time as further period is fixed or a fresh contract is made, the tenant is called a tenant-at-will. The landlord will decide for what further period shall the tenancy be given. 'A tenancy-at-will is implied when a person is in possession by the consent of the owner and is not held in view of any tenancy for a certain time. The tenancy-at-will does not mean that the landlord has to give a proper notice to quit. The tenant-at-will cannot sublet during that period because no valid contract for further extension in his favour has been made. The death of the landlord or tenant determines the tenancy, i.e., the tenancy comes to an end. A tenancy by sufferance: This is a tenancy which is created by fiction of law. If a tenant continues to be in possession after the determination of the period of the lease without the consent of the landlord, he becomes a tenant by sufferance. A tenant-at-will is in possession with the consent of the landlord, whereas a tenant by sufferance is in possession without his permission after the term of the lease comes to an end. This type of tenant is not regarded as a trespasser because the tenant had in his favour a valid lease to start with. No notice is necessary to such a tenant for eviction. This tenant is not responsible for rent. He is liable to pay compensation for use and occupation of the land.