6. The related-word registration device according to claim 5 , further comprising predetermined time setting code that causes at least one of said at least one processor to set the second predetermined time on the basis of the number of related words registered by the related-word registering code.
6. The related-word registration device according to claim 5 , further comprising predetermined time setting code that causes at least one of said at least one processor to set the second predetermined time on the basis of the number of related words registered by the related-word registering code. 8. The related-word registration device according to claim 6 , wherein the first search query specifying code causes at least one of said at least one processor to specify, as a first search query, a search query whose acquisition time is closest to a time at which the user operation is detected.