All-terrain bike and Mountain bicycle

All-terrain bike noun - A bicycle with a sturdy frame and fat tires; originally designed for riding in mountainous country.

Mountain bicycle and all-terrain bike are semantically related in bicycle for rough terrain topic. In some cases you can use "Mountain bicycle" instead a noun phrase "All-terrain bike", when it comes to topics like off-road bicycle.

All-terrain bike and mountain bicycle are semantically related in bicycle for rough terrain topic. You can use "All-terrain bike" instead a noun phrase "Mountain bicycle", if it concerns topics such as off-road bicycle.