21. A non-transitory computer-readable medium storing instructions that, when executed by a computer processor, cause performance of operations that comprise: accessing, by a computing system, information that identifies weightings that have been applied to occurrences of a particular term that is common to multiple search queries, the weightings having been applied to the occurrences of the particular term in the multiple search queries based on chronological receipt of the multiple search queries such that the weightings favor recent occurrences of the particular term in the multiple search queries more heavily than older occurrences of the particular term in the multiple search queries; determining, by the computing system and based on the information that identifies the weightings that have been applied to the occurrences of the particular term in the multiple search queries, a probability of usage of the particular term, for use by a speech recognition system; and building or updating, by the computing system, a language model that is stored by the computing system, to reflect the determined probability of usage of the particular term, or sending, by the computing system and for receipt by a remote computing system, an indication of the determined probability of usage of the particular term so as to cause the remote computing system to build or update a language model that is stored by the remote computing system, to reflect the determined probability of usage of the particular term.
23. The computer-readable medium of claim 21 , wherein the operations comprise: building or updating, by the computing system, the language model that is stored by the computing system to reflect the determined probability of usage of the particular term; receiving, by the computing system and as having been sent by the remote computing system, a verbal input; and using, by the computing system and after the building or updating of the language model that is stored by the computing system to reflect the determined probability of usage of the particular term, the language model that is stored by the computing system to identify a text translation of the verbal input, wherein the text translation of the verbal input includes the particular term.