You can make your own fingerboard, with this mold and wood.
similar - resembling or similar; having the same or some of the same characteristics; often used in combination; suits of like design; a limited circle of like minds; members of the cat family have like dispositions; as like as two peas in a pod; doglike devotion; a dreamlike quality. like.
Analogy, on the other hand gives a rather parallel relationship with two words. This means that analogy explains the relationship between the similarities of these two things. It is a comparison that points out or gives proportional relations to two things or words. This form is usually being used in teaching.