Marionberry is a type of blackberry commonly grown in the Pacific Northwest region of the United States. It is a sweet and juicy berry with a deep purple color. Synonyms for marionberry include blackberry, boysenberry, loganberry, and dewberry. The blackberry is a close relative of the marionberry and has a similar flavor profile. Boysenberry is also quite similar to the marionberry, but is larger and reddish-purple in color. The loganberry is another hybrid berry that is a cross between blackberry and raspberry and has a tangy taste. Dewberry, on the other hand, is a type of wild blackberry that is smaller and less sweet than the marionberry.