A noun with bud as its root.

The confusion between the two may be related to the central meaning of "shooting"

The meaning of taking three parts of speech is as follows. Shoot traffic, shoot rapids. Shooting, shooting, injection and explosion ... The intransitive verb shooting, if used as a verb, represents the past tense of shooting and the past participle, with the same meaning. Other shooting and shooting can also be used separately. It appears as a noun, meaning "bullet, shell, hit and shoot". In addition, all capital letters are abbreviations of science and technology of the Historical Society, which is history.