Some grammarians use the term "verbal noun" to mean verbal noun, gerund and noun infinitive. It corresponds to the English infinitive or gerund. Catalan verbs have three non-finite forms&colon; an infinitive, a gerund, and a past participle. The infinitive also doubles as a verbal noun, corresponding to the English gerund in "-ing". Spanish has three impersonal forms&colon; the infinitive, the gerund, and the past participle. For example, most have no infinitive or gerund. The non-finite verb forms are the gerund and the active and passive participles. The gerund is distinct from the present participle. For details see gerund and participle. The gerund is formed similarly to the present active participle. One common use of the gerund is with the preposition to indicate purpose. The Latin gerund is a form of the verb. For uses of the present participle and gerund, see below. These raiding expeditions are called "panggubat" (noun) or "manggubat" (gerund verb form). Here "shouting" could be either a gerund or a verbal noun.