Among verb types, an ergative verb pair refers to an intransitive-transitive verb pair, where the subject of the intransitive is the object of the transitive, and the transitive expresses the causation of the intransitive event. Although there are some exceptions, like ditransitive verbs.
For example: ageru 上げる, "to raise," and agaru 上がる, "to rise," form an ergative verb pair both in English and in Japanese. If "you raise something" (object), you cause: "something rises." (subject)