Do we see anything common in the meanings of these words: rgod pa, rgad pa, bgad pa, dgyes pa, rgyas pa, gyes pa, and ’gyes pa? One meaning of rgod pa is “to laugh.” As an adjective, it also means “wild.” And bgad pa also means “to laugh,” whereas dgyes pa “to be glad/pleased.” In addition, rgyas pa (cf. rgya ba) (opposite of rgud pa) means “to increase/spread,” gyes pa (cf. ’gye ba) “to separate or disperse,” and ’ges pa “to split.” In all of these I see the meaning “to expand (something in one way or another).” Or, is it pure coincidental? Perhaps should rgas pa also belong to this group?