hearing is a feminine noun that means ear, hearing. The adverbial locution “by ear”, means “by heart”, “to hear said”, without verifying anything. Listening is whatif heard, repeated several timesands and nothing has been checked to make sure it is true. "By hearing" is the same as hearing, it means by hearsay.
In the area of Law, hearing is the hearing of a witness or those involved in the process being judged.
In a process, the expression to your hearing it is an informal, extrajudicial act, in which the accused is heard, without the presence of a lawyer who can instruct the answers that will be given to the authorities. There is no compromise of information that can be used as evidence against the accused.
An example of the meaning of hearing can be seen in the Statute of Children and Adolescents, in section V – Investigation of an Infringement Act Attributed to Adolescents – in Art. 179 - "The adolescent, the representative of the Public Prosecutor's Office, on the same day and in view of the arrest report, police report or police report, duly fined by the judicial office and with information on the adolescent's background, will proceed immediately and informally to his hearing and, if possible, his parents or guardians, victim and witnesses".