Poste restante and Pillar box

Poste restante noun - A notation written on mail that is to be held at the post office until called for (not in the United States or Canada).

Pillar box and poste restante are semantically related. In some cases you can use "Pillar box" instead a noun phrase "Poste restante".

Pillar box noun - A red pillar-shaped letter box.

Poste restante and pillar box are semantically related. You can use "Poste restante" instead a noun phrase "Pillar box".