The prefix "ber-" is used in Indonesian to form verbs and adjectives from nouns and verbs. When added to a noun, it typically creates a verb meaning "to have or perform the property of that noun". When added to a verb, it typically creates an intransitive verb. Examples are provided that translate as verbs like "berbahasa" (to speak) or adjectives like "berbahaya" (dangerous). Context helps determine if the prefixed word is a verb or adjective. The prefix creates reflexive verbs when combined with verb roots.