Cupboard and Salad bar

Cupboard noun - A built-in space for storage behind a door.

Salad bar and cupboard are semantically related In some cases you can use "Salad bar" instead a noun "Cupboard".

Salad bar noun - A bar where diners can assemble a salad to their own taste.

Cupboard and salad bar are semantically related in meal set out on table for choosing topic. You can use "Cupboard" instead a noun phrase "Salad bar".